Finding the Fourth Proportional to 11,105.99, 15,324.78 and 7,132.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.99 : 15,324.78 = 7,132.48 : x
2. Step 2: Convert to fraction form
   11,105.99/15,324.78 = 7,132.48/x
3. Step 3: Cross multiply
   11,105.99x = 15,324.78 × 7,132.48
4. Step 4: Simplify right side
   11,105.99x = 109,303,686.85
5. Step 5: Solve for x
   x = 109,303,686.85/11,105.99
6. Step 6: Final answer
   x = 9,841.87