Finding the Fourth Proportional to 11,543.58, 15,943.28 and 7,760.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,543.58 : 15,943.28 = 7,760.18 : x
2. Step 2: Convert to fraction form
   11,543.58/15,943.28 = 7,760.18/x
3. Step 3: Cross multiply
   11,543.58x = 15,943.28 × 7,760.18
4. Step 4: Simplify right side
   11,543.58x = 123,722,722.59
5. Step 5: Solve for x
   x = 123,722,722.59/11,543.58
6. Step 6: Final answer
   x = 10,717.88