Finding the Fourth Proportional to 8,878.78, 12,304.52 and 8,753.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,878.78 : 12,304.52 = 8,753.50 : x
2. Step 2: Convert to fraction form
   8,878.78/12,304.52 = 8,753.50/x
3. Step 3: Cross multiply
   8,878.78x = 12,304.52 × 8,753.50
4. Step 4: Simplify right side
   8,878.78x = 107,707,615.82
5. Step 5: Solve for x
   x = 107,707,615.82/8,878.78
6. Step 6: Final answer
   x = 12,130.90