Finding the Fourth Proportional to 9,091.24, 12,543.01 and 5,507.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.24 : 12,543.01 = 5,507.55 : x
2. Step 2: Convert to fraction form
   9,091.24/12,543.01 = 5,507.55/x
3. Step 3: Cross multiply
   9,091.24x = 12,543.01 × 5,507.55
4. Step 4: Simplify right side
   9,091.24x = 69,081,254.73
5. Step 5: Solve for x
   x = 69,081,254.73/9,091.24
6. Step 6: Final answer
   x = 7,598.66