Finding the Fourth Proportional to 22,939.00, 31,665.53 and 13,989.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,939.00 : 31,665.53 = 13,989.71 : x
2. Step 2: Convert to fraction form
   22,939.00/31,665.53 = 13,989.71/x
3. Step 3: Cross multiply
   22,939.00x = 31,665.53 × 13,989.71
4. Step 4: Simplify right side
   22,939.00x = 442,991,695.83
5. Step 5: Solve for x
   x = 442,991,695.83/22,939.00
6. Step 6: Final answer
   x = 19,311.73