Finding the Fourth Proportional to 8,857.89, 12,223.86 and 4,879

Step by Step Solution

1. Step 1: Write the proportion equation
   8,857.89 : 12,223.86 = 4,879 : x
2. Step 2: Convert to fraction form
   8,857.89/12,223.86 = 4,879/x
3. Step 3: Cross multiply
   8,857.89x = 12,223.86 × 4,879
4. Step 4: Simplify right side
   8,857.89x = 59,640,212.94
5. Step 5: Solve for x
   x = 59,640,212.94/8,857.89
6. Step 6: Final answer
   x = 6,733.00