Finding the Fourth Proportional to 11,216.88, 15,498.54 and 8,876.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,216.88 : 15,498.54 = 8,876.79 : x
2. Step 2: Convert to fraction form
   11,216.88/15,498.54 = 8,876.79/x
3. Step 3: Cross multiply
   11,216.88x = 15,498.54 × 8,876.79
4. Step 4: Simplify right side
   11,216.88x = 137,577,284.89
5. Step 5: Solve for x
   x = 137,577,284.89/11,216.88
6. Step 6: Final answer
   x = 12,265.20