Finding the Fourth Proportional to 9,223.56, 12,639.90 and 8,337.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,223.56 : 12,639.90 = 8,337.88 : x
2. Step 2: Convert to fraction form
   9,223.56/12,639.90 = 8,337.88/x
3. Step 3: Cross multiply
   9,223.56x = 12,639.90 × 8,337.88
4. Step 4: Simplify right side
   9,223.56x = 105,389,969.41
5. Step 5: Solve for x
   x = 105,389,969.41/9,223.56
6. Step 6: Final answer
   x = 11,426.17