Finding the Fourth Proportional to 8,516.82, 12,766.59 and 5,395.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,516.82 : 12,766.59 = 5,395.86 : x
2. Step 2: Convert to fraction form
   8,516.82/12,766.59 = 5,395.86/x
3. Step 3: Cross multiply
   8,516.82x = 12,766.59 × 5,395.86
4. Step 4: Simplify right side
   8,516.82x = 68,886,732.32
5. Step 5: Solve for x
   x = 68,886,732.32/8,516.82
6. Step 6: Final answer
   x = 8,088.32