Finding the Fourth Proportional to 10,976.72, 15,143.58 and 6,498.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.72 : 15,143.58 = 6,498.86 : x
2. Step 2: Convert to fraction form
   10,976.72/15,143.58 = 6,498.86/x
3. Step 3: Cross multiply
   10,976.72x = 15,143.58 × 6,498.86
4. Step 4: Simplify right side
   10,976.72x = 98,416,006.32
5. Step 5: Solve for x
   x = 98,416,006.32/10,976.72
6. Step 6: Final answer
   x = 8,965.88