Finding the Fourth Proportional to 8,839.72, 12,199.62 and 4,861.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,839.72 : 12,199.62 = 4,861.61 : x
2. Step 2: Convert to fraction form
   8,839.72/12,199.62 = 4,861.61/x
3. Step 3: Cross multiply
   8,839.72x = 12,199.62 × 4,861.61
4. Step 4: Simplify right side
   8,839.72x = 59,309,794.59
5. Step 5: Solve for x
   x = 59,309,794.59/8,839.72
6. Step 6: Final answer
   x = 6,709.47