An element of aluminum in triaxial stress (see figure) is subjected to stresses (x = 5200 psi

Question:

An element of aluminum in triaxial stress (see figure) is subjected to stresses (x = 5200 psi (tension), (y = - 4750 psi (compression), and (z = - 3090 psi (compression).
It is also known that the normal strains in the x and y directions are (x = 7138.8 ( 10-6 (elongation) and (y = - 502.3 ( 10-6 (shortening). What is the bulk modulus K for the aluminum?