Finding the Fourth Proportional to 8,839.57, 12,198.83 and 4,860.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,839.57 : 12,198.83 = 4,860.78 : x
2. Step 2: Convert to fraction form
   8,839.57/12,198.83 = 4,860.78/x
3. Step 3: Cross multiply
   8,839.57x = 12,198.83 × 4,860.78
4. Step 4: Simplify right side
   8,839.57x = 59,295,828.89
5. Step 5: Solve for x
   x = 59,295,828.89/8,839.57
6. Step 6: Final answer
   x = 6,708.00