Finding the Fourth Proportional to 8,865.57, 12,234.33 and 4,886.70

Step by Step Solution

1. Step 1: Write the proportion equation
   8,865.57 : 12,234.33 = 4,886.70 : x
2. Step 2: Convert to fraction form
   8,865.57/12,234.33 = 4,886.70/x
3. Step 3: Cross multiply
   8,865.57x = 12,234.33 × 4,886.70
4. Step 4: Simplify right side
   8,865.57x = 59,785,500.41
5. Step 5: Solve for x
   x = 59,785,500.41/8,865.57
6. Step 6: Final answer
   x = 6,743.56