Finding the Fourth Proportional to 8,908.76, 12,285.96 and 7,649.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,908.76 : 12,285.96 = 7,649.42 : x
2. Step 2: Convert to fraction form
   8,908.76/12,285.96 = 7,649.42/x
3. Step 3: Cross multiply
   8,908.76x = 12,285.96 × 7,649.42
4. Step 4: Simplify right side
   8,908.76x = 93,980,456.55
5. Step 5: Solve for x
   x = 93,980,456.55/8,908.76
6. Step 6: Final answer
   x = 10,549.22