Finding the Fourth Proportional to 8,900.96, 12,285.76 and 5,541.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900.96 : 12,285.76 = 5,541.78 : x
2. Step 2: Convert to fraction form
   8,900.96/12,285.76 = 5,541.78/x
3. Step 3: Cross multiply
   8,900.96x = 12,285.76 × 5,541.78
4. Step 4: Simplify right side
   8,900.96x = 68,084,979.05
5. Step 5: Solve for x
   x = 68,084,979.05/8,900.96
6. Step 6: Final answer
   x = 7,649.17