If XRP goes to $4, it will be the first coin I have in my entire life to x10. I don't have much at all, because I never really liked Ripple, just want to use them to speculate;)
But if I x10 on XRP, I'll be a very happy guy. Who won't be happy right? It's not much almost $100 now but $1000 will be a super nice bonus.
In crypto trading nothing is impossible, because prices are determined by the supply and demand of the community itself. For example, bitcoin is as big as this, of course nobody would have thought, because when it was created the price was only worth a candy, very cheap.
So, XRP reaching USD 4 is possible, but it doesn't know when it will be reached. If according to my prediction until December this year it will be difficult to achieve because today the price has only reached USD 0.3181.