Finding the Fourth Proportional to 22,492.52, 31,039.50 and 12,421.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,492.52 : 31,039.50 = 12,421.64 : x
2. Step 2: Convert to fraction form
   22,492.52/31,039.50 = 12,421.64/x
3. Step 3: Cross multiply
   22,492.52x = 31,039.50 × 12,421.64
4. Step 4: Simplify right side
   22,492.52x = 385,561,494.78
5. Step 5: Solve for x
   x = 385,561,494.78/22,492.52
6. Step 6: Final answer
   x = 17,141.77