Finding the Fourth Proportional to 8,878.77, 12,251.39 and 4,900.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.77 : 12,251.39 = 4,900.05 : x
2. Step 2: Convert to fraction form
   8,878.77/12,251.39 = 4,900.05/x
3. Step 3: Cross multiply
   8,878.77x = 12,251.39 × 4,900.05
4. Step 4: Simplify right side
   8,878.77x = 60,032,399.07
5. Step 5: Solve for x
   x = 60,032,399.07/8,878.77
6. Step 6: Final answer
   x = 6,761.34