Finding the Fourth Proportional to 22,971.50, 31,700.70 and 13,035.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,971.50 : 31,700.70 = 13,035.50 : x
2. Step 2: Convert to fraction form
   22,971.50/31,700.70 = 13,035.50/x
3. Step 3: Cross multiply
   22,971.50x = 31,700.70 × 13,035.50
4. Step 4: Simplify right side
   22,971.50x = 413,234,474.85
5. Step 5: Solve for x
   x = 413,234,474.85/22,971.50
6. Step 6: Final answer
   x = 17,989.01