Finding the Fourth Proportional to 22,545.50, 31,112.80 and 12,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,545.50 : 31,112.80 = 12,609.50 : x
2. Step 2: Convert to fraction form
   22,545.50/31,112.80 = 12,609.50/x
3. Step 3: Cross multiply
   22,545.50x = 31,112.80 × 12,609.50
4. Step 4: Simplify right side
   22,545.50x = 392,316,851.60
5. Step 5: Solve for x
   x = 392,316,851.60/22,545.50
6. Step 6: Final answer
   x = 17,401.12