Finding the Fourth Proportional to 22,681.86, 31,288.56 and 14,490.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,681.86 : 31,288.56 = 14,490.12 : x
2. Step 2: Convert to fraction form
   22,681.86/31,288.56 = 14,490.12/x
3. Step 3: Cross multiply
   22,681.86x = 31,288.56 × 14,490.12
4. Step 4: Simplify right side
   22,681.86x = 453,374,989.03
5. Step 5: Solve for x
   x = 453,374,989.03/22,681.86
6. Step 6: Final answer
   x = 19,988.44