Finding the Fourth Proportional to 16,597.31, 22,905.42 and 10,139.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,597.31 : 22,905.42 = 10,139.71 : x
2. Step 2: Convert to fraction form
   16,597.31/22,905.42 = 10,139.71/x
3. Step 3: Cross multiply
   16,597.31x = 22,905.42 × 10,139.71
4. Step 4: Simplify right side
   16,597.31x = 232,254,344.86
5. Step 5: Solve for x
   x = 232,254,344.86/16,597.31
6. Step 6: Final answer
   x = 13,993.49