Finding the Fourth Proportional to 16,640.41, 22,963.42 and 9,086.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640.41 : 22,963.42 = 9,086.80 : x
2. Step 2: Convert to fraction form
   16,640.41/22,963.42 = 9,086.80/x
3. Step 3: Cross multiply
   16,640.41x = 22,963.42 × 9,086.80
4. Step 4: Simplify right side
   16,640.41x = 208,664,004.86
5. Step 5: Solve for x
   x = 208,664,004.86/16,640.41
6. Step 6: Final answer
   x = 12,539.60