Finding the Fourth Proportional to 8,851.41, 12,214.89 and 4,872.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.41 : 12,214.89 = 4,872.78 : x
2. Step 2: Convert to fraction form
   8,851.41/12,214.89 = 4,872.78/x
3. Step 3: Cross multiply
   8,851.41x = 12,214.89 × 4,872.78
4. Step 4: Simplify right side
   8,851.41x = 59,520,471.69
5. Step 5: Solve for x
   x = 59,520,471.69/8,851.41
6. Step 6: Final answer
   x = 6,724.41