Finding the Fourth Proportional to 8,878.74, 12,252.71 and 4,899.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.74 : 12,252.71 = 4,899.86 : x
2. Step 2: Convert to fraction form
   8,878.74/12,252.71 = 4,899.86/x
3. Step 3: Cross multiply
   8,878.74x = 12,252.71 × 4,899.86
4. Step 4: Simplify right side
   8,878.74x = 60,036,477.86
5. Step 5: Solve for x
   x = 60,036,477.86/8,878.74
6. Step 6: Final answer
   x = 6,761.82