Finding the Fourth Proportional to 3,256.72, 4,492.74 and 3,131.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,256.72 : 4,492.74 = 3,131.02 : x
2. Step 2: Convert to fraction form
   3,256.72/4,492.74 = 3,131.02/x
3. Step 3: Cross multiply
   3,256.72x = 4,492.74 × 3,131.02
4. Step 4: Simplify right side
   3,256.72x = 14,066,858.79
5. Step 5: Solve for x
   x = 14,066,858.79/3,256.72
6. Step 6: Final answer
   x = 4,319.33