Finding the Fourth Proportional to 22,522.50, 31,088.34 and 14,139

Step by Step Solution

1. Step 1: Write the proportion equation
   22,522.50 : 31,088.34 = 14,139 : x
2. Step 2: Convert to fraction form
   22,522.50/31,088.34 = 14,139/x
3. Step 3: Cross multiply
   22,522.50x = 31,088.34 × 14,139
4. Step 4: Simplify right side
   22,522.50x = 439,558,039.26
5. Step 5: Solve for x
   x = 439,558,039.26/22,522.50
6. Step 6: Final answer
   x = 19,516.40