Finding the Fourth Proportional to 8,856.27, 12,221.73 and 4,877.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,856.27 : 12,221.73 = 4,877.40 : x
2. Step 2: Convert to fraction form
   8,856.27/12,221.73 = 4,877.40/x
3. Step 3: Cross multiply
   8,856.27x = 12,221.73 × 4,877.40
4. Step 4: Simplify right side
   8,856.27x = 59,610,265.90
5. Step 5: Solve for x
   x = 59,610,265.90/8,856.27
6. Step 6: Final answer
   x = 6,730.85