Finding the Fourth Proportional to 8,878.10, 12,251.58 and 4,899.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.10 : 12,251.58 = 4,899.22 : x
2. Step 2: Convert to fraction form
   8,878.10/12,251.58 = 4,899.22/x
3. Step 3: Cross multiply
   8,878.10x = 12,251.58 × 4,899.22
4. Step 4: Simplify right side
   8,878.10x = 60,023,185.77
5. Step 5: Solve for x
   x = 60,023,185.77/8,878.10
6. Step 6: Final answer
   x = 6,760.81