[1] Hermanchuk was born on 14 March 1952 in the village of Andriivka, Ukraine SSR,[2] and educated from the Kyiv Institute of National Economy, Faculty of Finance and Economics from 1972 to 1977.

[3][4] Prior to Hermanchuk's ministerial role, he had held several early positions such as a fitter at the Tochelektroprylad plant, Kyiv in August 1969; service in the Soviet Army in May 1970; fitter-assembler of the Chervonyy ekskavator plant, Kyiv in June 1972; an economist of the personnel department in January 1979; the senior inspector for the implementation of best practices since September 1979; the senior economist of the state revenue department in January 1982; the senior economist in August 1982; the head of the agricultural financing department of the Kyiv Regional Council of People's Deputies in May 1985; the deputy head of management, head of the budget department, and financial management of the executive committee of the Kyiv Regional Council of People's Deputies in November 1985.

[3][5] Hermanchuk was also a member of the supervisory board of the Ukrainian Social Investment Fund in May 2000; member of the Ukrainian part of the Committee on Cooperation between Ukraine and the European Union (EU) since August 2000; member of the Commission on Housing Policy from April 1999 to November 2001; member of the Coordination Committee for Combating Corruption and Organized Crime under the President of Ukraine from September 2001 to February 2005; Chairman of the Exchange Committee of the Ukrainian Interbank Currency Exchange since September 1998; member of the State Commission for Administrative Reform in Ukraine since July 2001; adviser to the Prime Minister of Ukraine on public grounds from November 2006 to December 2007.

[3] Due to his participant in the liquidation of the consequences of the accident at the Chernobyl Nuclear Power Plant,[3] he passed away in Kyiv on 29 June 2012.

Prime Minister Mykola Azarov quoted, "Hermanchuk Petro Kuzmych, a distinguished specialist and engaged statesman, significantly contributed to securing the growth of Ukraine.