Finding the Fourth Proportional to 11,557.99, 15,942.50 and 7,080.11

Step by Step Solution

1. Step 1: Write the proportion equation
   11,557.99 : 15,942.50 = 7,080.11 : x
2. Step 2: Convert to fraction form
   11,557.99/15,942.50 = 7,080.11/x
3. Step 3: Cross multiply
   11,557.99x = 15,942.50 × 7,080.11
4. Step 4: Simplify right side
   11,557.99x = 112,874,573.96
5. Step 5: Solve for x
   x = 112,874,573.96/11,557.99
6. Step 6: Final answer
   x = 9,765.94