Finding the Fourth Proportional to 8,782.72, 12,120.48 and 5,006.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,782.72 : 12,120.48 = 5,006.48 : x
2. Step 2: Convert to fraction form
   8,782.72/12,120.48 = 5,006.48/x
3. Step 3: Cross multiply
   8,782.72x = 12,120.48 × 5,006.48
4. Step 4: Simplify right side
   8,782.72x = 60,680,940.71
5. Step 5: Solve for x
   x = 60,680,940.71/8,782.72
6. Step 6: Final answer
   x = 6,909.13