Finding the Fourth Proportional to 8,976.24, 12,380.76 and 5,790.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.24 : 12,380.76 = 5,790.24 : x
2. Step 2: Convert to fraction form
   8,976.24/12,380.76 = 5,790.24/x
3. Step 3: Cross multiply
   8,976.24x = 12,380.76 × 5,790.24
4. Step 4: Simplify right side
   8,976.24x = 71,687,571.78
5. Step 5: Solve for x
   x = 71,687,571.78/8,976.24
6. Step 6: Final answer
   x = 7,986.37