Moment of inertia of a disc of mass \( M \) and radius ‘\( R \)’ about any of its diameter is \( \frac{MR^{2}}{4} \). The moment of inertia of this disc about an axis normal to the disc and passing through a point on its edge will be, \( \frac{x}{2} MR^{2} \). The value of \( x \) is _______.
