Finding the Fourth Proportional to 8,878.05, 12,251.82 and 4,899.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.05 : 12,251.82 = 4,899.30 : x
2. Step 2: Convert to fraction form
   8,878.05/12,251.82 = 4,899.30/x
3. Step 3: Cross multiply
   8,878.05x = 12,251.82 × 4,899.30
4. Step 4: Simplify right side
   8,878.05x = 60,025,341.73
5. Step 5: Solve for x
   x = 60,025,341.73/8,878.05
6. Step 6: Final answer
   x = 6,761.10