Finding the Fourth Proportional to 8,597.16, 12,910.86 and 8,474.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,597.16 : 12,910.86 = 8,474.04 : x
2. Step 2: Convert to fraction form
   8,597.16/12,910.86 = 8,474.04/x
3. Step 3: Cross multiply
   8,597.16x = 12,910.86 × 8,474.04
4. Step 4: Simplify right side
   8,597.16x = 109,407,144.07
5. Step 5: Solve for x
   x = 109,407,144.07/8,597.16
6. Step 6: Final answer
   x = 12,725.96