Any idea what is it?
 

So i found google indexed page 51 of my wordpress website like this: http://www.mydomain.com/page/51/?x=5196.9151. I've tried googling "?x=" and found nothing. anyone here's got a clue what could it be? I mean the ?x=5196.9151. part.

Trade script

Anything after a query string (?) could be indexed by google as a page if there is a reason to. For example if you were to link to www.gfy.com?any_idea_what_this_is
From one of your sites, eventually it would probably show up as a result in google.

but im not using any trade scripts on this website, it's just wordpress.