Finding the Fourth Proportional to 8,839.95, 12,199.52 and 4,861.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,839.95 : 12,199.52 = 4,861.21 : x
2. Step 2: Convert to fraction form
   8,839.95/12,199.52 = 4,861.21/x
3. Step 3: Cross multiply
   8,839.95x = 12,199.52 × 4,861.21
4. Step 4: Simplify right side
   8,839.95x = 59,304,410.27
5. Step 5: Solve for x
   x = 59,304,410.27/8,839.95
6. Step 6: Final answer
   x = 6,708.68