Plotting predicted values on y axis given a value on x axis

[MetinBulus]

Hi all, I need your help to overcome the obstacle below. The graph is from PROC LOESS procedure. I want to find and plot the predicted value on x axis for a given value on x axis. Is there a way to do that in PROC LOESS procedure or using other plotting techniques? 

[Reeza]

Is that on top of this particular graph, or instead of?

[MetinBulus]

Any similar graph will do if it works. The data may not include the arbitrary x axis value and the predicted value on y axis.