A circle with centre \(C\) has a diameter \(PQ\) and radius \(CS\). Chord \(PR\) intersects \(CS\) and chord \(SQ\) at \(A\) and \(B\), respectively. If \(\angle CAP = 90^\circ\), \(\angle RPQ = 24^\circ\), and \(\angle QBR = x\degree\), then determine the value of \(x\).