Finding the Fourth Proportional to 8,711.52, 12,003.12 and 5,912.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,711.52 : 12,003.12 = 5,912.16 : x
2. Step 2: Convert to fraction form
   8,711.52/12,003.12 = 5,912.16/x
3. Step 3: Cross multiply
   8,711.52x = 12,003.12 × 5,912.16
4. Step 4: Simplify right side
   8,711.52x = 70,964,365.94
5. Step 5: Solve for x
   x = 70,964,365.94/8,711.52
6. Step 6: Final answer
   x = 8,146.04