Finding the Fourth Proportional to 8,878.72, 12,248.76 and 5,339.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.72 : 12,248.76 = 5,339.92 : x
2. Step 2: Convert to fraction form
   8,878.72/12,248.76 = 5,339.92/x
3. Step 3: Cross multiply
   8,878.72x = 12,248.76 × 5,339.92
4. Step 4: Simplify right side
   8,878.72x = 65,407,398.50
5. Step 5: Solve for x
   x = 65,407,398.50/8,878.72
6. Step 6: Final answer
   x = 7,366.76