Finding the Fourth Proportional to 16,639.06, 22,966.89 and 9,929.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,639.06 : 22,966.89 = 9,929.38 : x
2. Step 2: Convert to fraction form
   16,639.06/22,966.89 = 9,929.38/x
3. Step 3: Cross multiply
   16,639.06x = 22,966.89 × 9,929.38
4. Step 4: Simplify right side
   16,639.06x = 228,046,978.23
5. Step 5: Solve for x
   x = 228,046,978.23/16,639.06
6. Step 6: Final answer
   x = 13,705.52