Finding the Fourth Proportional to 8,863.79, 12,231.56 and 4,884.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,863.79 : 12,231.56 = 4,884.15 : x
2. Step 2: Convert to fraction form
   8,863.79/12,231.56 = 4,884.15/x
3. Step 3: Cross multiply
   8,863.79x = 12,231.56 × 4,884.15
4. Step 4: Simplify right side
   8,863.79x = 59,740,749.35
5. Step 5: Solve for x
   x = 59,740,749.35/8,863.79
6. Step 6: Final answer
   x = 6,739.87