Finding the Fourth Proportional to 8,878.83, 12,253.37 and 5,103.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.83 : 12,253.37 = 5,103.21 : x
2. Step 2: Convert to fraction form
   8,878.83/12,253.37 = 5,103.21/x
3. Step 3: Cross multiply
   8,878.83x = 12,253.37 × 5,103.21
4. Step 4: Simplify right side
   8,878.83x = 62,531,520.32
5. Step 5: Solve for x
   x = 62,531,520.32/8,878.83
6. Step 6: Final answer
   x = 7,042.77