Finding the Fourth Proportional to 11,082.72, 15,299.81 and 8,559.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,082.72 : 15,299.81 = 8,559.17 : x
2. Step 2: Convert to fraction form
   11,082.72/15,299.81 = 8,559.17/x
3. Step 3: Cross multiply
   11,082.72x = 15,299.81 × 8,559.17
4. Step 4: Simplify right side
   11,082.72x = 130,953,555.46
5. Step 5: Solve for x
   x = 130,953,555.46/11,082.72
6. Step 6: Final answer
   x = 11,816.01