Finding the Fourth Proportional to 8,216.50, 12,327.85 and 4,931.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,216.50 : 12,327.85 = 4,931.88 : x
2. Step 2: Convert to fraction form
   8,216.50/12,327.85 = 4,931.88/x
3. Step 3: Cross multiply
   8,216.50x = 12,327.85 × 4,931.88
4. Step 4: Simplify right side
   8,216.50x = 60,799,433.71
5. Step 5: Solve for x
   x = 60,799,433.71/8,216.50
6. Step 6: Final answer
   x = 7,399.68