Finding the Fourth Proportional to 11,375.20, 17,066.85 and 5,831.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,375.20 : 17,066.85 = 5,831.15 : x
2. Step 2: Convert to fraction form
   11,375.20/17,066.85 = 5,831.15/x
3. Step 3: Cross multiply
   11,375.20x = 17,066.85 × 5,831.15
4. Step 4: Simplify right side
   11,375.20x = 99,519,333.22
5. Step 5: Solve for x
   x = 99,519,333.22/11,375.20
6. Step 6: Final answer
   x = 8,748.80