Finding the Fourth Proportional to 22,693.37, 31,320.68 and 13,131.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,693.37 : 31,320.68 = 13,131.86 : x
2. Step 2: Convert to fraction form
   22,693.37/31,320.68 = 13,131.86/x
3. Step 3: Cross multiply
   22,693.37x = 31,320.68 × 13,131.86
4. Step 4: Simplify right side
   22,693.37x = 411,298,562.60
5. Step 5: Solve for x
   x = 411,298,562.60/22,693.37
6. Step 6: Final answer
   x = 18,124.18