Finding the Fourth Proportional to 22,669.50, 31,285.86 and 12,735.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,669.50 : 31,285.86 = 12,735.42 : x
2. Step 2: Convert to fraction form
   22,669.50/31,285.86 = 12,735.42/x
3. Step 3: Cross multiply
   22,669.50x = 31,285.86 × 12,735.42
4. Step 4: Simplify right side
   22,669.50x = 398,438,567.16
5. Step 5: Solve for x
   x = 398,438,567.16/22,669.50
6. Step 6: Final answer
   x = 17,575.98