Right of Way

OK, this is something I’m not totally sure about, so help me out here ok? I was driving on Reserve in the ‘Couve today and I came to the stop sign at Evergreen and I stopped. No cars were approaching on Evergreen so I started to go, then I saw to skateboarders and they weren’t slowing down. There is a stop sign on Evergreen at Reserve as well, so it’s a 4 way stop. I was at the intersection way before the boarders were, so I think I have the right of way. These 2 guys were not pedestrines on the sidewalk, they were on their boards in the street. So who has the legal right of way?