Finding the Fourth Proportional to 16,639.29, 22,963.15 and 9,086.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,639.29 : 22,963.15 = 9,086.32 : x
2. Step 2: Convert to fraction form
   16,639.29/22,963.15 = 9,086.32/x
3. Step 3: Cross multiply
   16,639.29x = 22,963.15 × 9,086.32
4. Step 4: Simplify right side
   16,639.29x = 208,650,627.02
5. Step 5: Solve for x
   x = 208,650,627.02/16,639.29
6. Step 6: Final answer
   x = 12,539.64