Finding the Fourth Proportional to 11,087.72, 15,301.05 and 7,557.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,087.72 : 15,301.05 = 7,557.10 : x
2. Step 2: Convert to fraction form
   11,087.72/15,301.05 = 7,557.10/x
3. Step 3: Cross multiply
   11,087.72x = 15,301.05 × 7,557.10
4. Step 4: Simplify right side
   11,087.72x = 115,631,545.60
5. Step 5: Solve for x
   x = 115,631,545.60/11,087.72
6. Step 6: Final answer
   x = 10,428.79