Finding the Fourth Proportional to 9,091.32, 12,543.30 and 5,550.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.32 : 12,543.30 = 5,550.81 : x
2. Step 2: Convert to fraction form
   9,091.32/12,543.30 = 5,550.81/x
3. Step 3: Cross multiply
   9,091.32x = 12,543.30 × 5,550.81
4. Step 4: Simplify right side
   9,091.32x = 69,625,475.07
5. Step 5: Solve for x
   x = 69,625,475.07/9,091.32
6. Step 6: Final answer
   x = 7,658.46