Finding the Fourth Proportional to 8,855.80, 12,219.59 and 5,078.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,855.80 : 12,219.59 = 5,078.24 : x
2. Step 2: Convert to fraction form
   8,855.80/12,219.59 = 5,078.24/x
3. Step 3: Cross multiply
   8,855.80x = 12,219.59 × 5,078.24
4. Step 4: Simplify right side
   8,855.80x = 62,054,010.72
5. Step 5: Solve for x
   x = 62,054,010.72/8,855.80
6. Step 6: Final answer
   x = 7,007.16