In June 2010, Petrović joined with Serbian economy minister Mlađan Dinkić to announce that the Italian clothing company Golden Lady would construct a factory in the city.
Petrović led the alliance to a plurality victory with twenty-one out of fifty-nine mandates in the 2012 local elections and was thereafter chosen for another term as mayor.
[8][9][10] In 2018, he and Serbian president Aleksandar Vučić announced that the Chinese car parts company Minth would invest in a factory in the city.
[11] Petrović subsequently promoted investment in the electric vehicle sector in Loznica in 2019, noting the presence of Rio Tinto's Jadar mine in the municipality as an incentive.
G17 Plus participated in Serbia's coalition government after the election, and Petrović served in the ministry of finance from March to October 2004.
[21] Serbia's election laws were reformed in 2011, such that mandates were awarded in numerical order to candidates on successful lists.
Petrović received the ninth position on the United Regions of Serbia list in the 2012 parliamentary election and was re-elected when the alliance won sixteen seats.