Finding the Fourth Proportional to 16,640.35, 22,963.79 and 9,086.73

Step by Step Solution

1. Step 1: Write the proportion equation
   16,640.35 : 22,963.79 = 9,086.73 : x
2. Step 2: Convert to fraction form
   16,640.35/22,963.79 = 9,086.73/x
3. Step 3: Cross multiply
   16,640.35x = 22,963.79 × 9,086.73
4. Step 4: Simplify right side
   16,640.35x = 208,665,812.50
5. Step 5: Solve for x
   x = 208,665,812.50/16,640.35
6. Step 6: Final answer
   x = 12,539.75