Finding the Fourth Proportional to 8,488.56, 12,715.56 and 3,857.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.56 : 12,715.56 = 3,857.52 : x
2. Step 2: Convert to fraction form
   8,488.56/12,715.56 = 3,857.52/x
3. Step 3: Cross multiply
   8,488.56x = 12,715.56 × 3,857.52
4. Step 4: Simplify right side
   8,488.56x = 49,050,527.01
5. Step 5: Solve for x
   x = 49,050,527.01/8,488.56
6. Step 6: Final answer
   x = 5,778.43