Finding the Fourth Proportional to 8,856.28, 12,221.48 and 4,877.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,856.28 : 12,221.48 = 4,877.43 : x
2. Step 2: Convert to fraction form
   8,856.28/12,221.48 = 4,877.43/x
3. Step 3: Cross multiply
   8,856.28x = 12,221.48 × 4,877.43
4. Step 4: Simplify right side
   8,856.28x = 59,609,379.56
5. Step 5: Solve for x
   x = 59,609,379.56/8,856.28
6. Step 6: Final answer
   x = 6,730.75