Finding the Fourth Proportional to 8,715.32, 12,025.21 and 4,938.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,715.32 : 12,025.21 = 4,938.15 : x
2. Step 2: Convert to fraction form
   8,715.32/12,025.21 = 4,938.15/x
3. Step 3: Cross multiply
   8,715.32x = 12,025.21 × 4,938.15
4. Step 4: Simplify right side
   8,715.32x = 59,382,266.07
5. Step 5: Solve for x
   x = 59,382,266.07/8,715.32
6. Step 6: Final answer
   x = 6,813.55