Finding the Fourth Proportional to 22,635.73, 31,237 and 12,564.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,635.73 : 31,237 = 12,564.15 : x
2. Step 2: Convert to fraction form
   22,635.73/31,237 = 12,564.15/x
3. Step 3: Cross multiply
   22,635.73x = 31,237 × 12,564.15
4. Step 4: Simplify right side
   22,635.73x = 392,466,353.55
5. Step 5: Solve for x
   x = 392,466,353.55/22,635.73
6. Step 6: Final answer
   x = 17,338.36