Finding the Fourth Proportional to 8,863.30, 12,231.89 and 4,884.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,863.30 : 12,231.89 = 4,884.78 : x
2. Step 2: Convert to fraction form
   8,863.30/12,231.89 = 4,884.78/x
3. Step 3: Cross multiply
   8,863.30x = 12,231.89 × 4,884.78
4. Step 4: Simplify right side
   8,863.30x = 59,750,091.63
5. Step 5: Solve for x
   x = 59,750,091.63/8,863.30
6. Step 6: Final answer
   x = 6,741.29