Finding the Fourth Proportional to 9,090.38, 12,545.34 and 5,550.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.38 : 12,545.34 = 5,550.68 : x
2. Step 2: Convert to fraction form
   9,090.38/12,545.34 = 5,550.68/x
3. Step 3: Cross multiply
   9,090.38x = 12,545.34 × 5,550.68
4. Step 4: Simplify right side
   9,090.38x = 69,635,167.83
5. Step 5: Solve for x
   x = 69,635,167.83/9,090.38
6. Step 6: Final answer
   x = 7,660.31