Finding the Fourth Proportional to 8,876.76, 13,292.37 and 8,613.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,876.76 : 13,292.37 = 8,613.98 : x
2. Step 2: Convert to fraction form
   8,876.76/13,292.37 = 8,613.98/x
3. Step 3: Cross multiply
   8,876.76x = 13,292.37 × 8,613.98
4. Step 4: Simplify right side
   8,876.76x = 114,500,192.72
5. Step 5: Solve for x
   x = 114,500,192.72/8,876.76
6. Step 6: Final answer
   x = 12,898.88