Finding the Fourth Proportional to 16,426.80, 22,665.60 and 9,712.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,426.80 : 22,665.60 = 9,712.62 : x
2. Step 2: Convert to fraction form
   16,426.80/22,665.60 = 9,712.62/x
3. Step 3: Cross multiply
   16,426.80x = 22,665.60 × 9,712.62
4. Step 4: Simplify right side
   16,426.80x = 220,142,359.87
5. Step 5: Solve for x
   x = 220,142,359.87/16,426.80
6. Step 6: Final answer
   x = 13,401.41