Finding the Fourth Proportional to 16,251.98, 22,429.31 and 9,877.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,251.98 : 22,429.31 = 9,877.17 : x
2. Step 2: Convert to fraction form
   16,251.98/22,429.31 = 9,877.17/x
3. Step 3: Cross multiply
   16,251.98x = 22,429.31 × 9,877.17
4. Step 4: Simplify right side
   16,251.98x = 221,538,142.58
5. Step 5: Solve for x
   x = 221,538,142.58/16,251.98
6. Step 6: Final answer
   x = 13,631.46