He guest starred on Medium (2009) as Kyle "K.C." Covington for one episode. Prokop landed a role in the Brendan Fraser film Furry Vengeance (2010), playing Fraser's son and he played the role of Josh Rosen in the Disney Channel Original Movie Geek Charming (2011) based on author Robin Palmer's novel.
Prokop dated his Geek Charming co-star Sarah Hyland for five years until August 2014. In August, 2014, Hyland obtained a domestic-violence temporary restraining order against Prokop after she said he was physically and verbally abusive.