Finding the Fourth Proportional to 8,492.14, 12,724.72 and 5,708.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,492.14 : 12,724.72 = 5,708.58 : x
2. Step 2: Convert to fraction form
   8,492.14/12,724.72 = 5,708.58/x
3. Step 3: Cross multiply
   8,492.14x = 12,724.72 × 5,708.58
4. Step 4: Simplify right side
   8,492.14x = 72,640,082.10
5. Step 5: Solve for x
   x = 72,640,082.10/8,492.14
6. Step 6: Final answer
   x = 8,553.80