Finding the Fourth Proportional to 12,488.24, 17,213.22 and 8,855.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.24 : 17,213.22 = 8,855.48 : x
2. Step 2: Convert to fraction form
   12,488.24/17,213.22 = 8,855.48/x
3. Step 3: Cross multiply
   12,488.24x = 17,213.22 × 8,855.48
4. Step 4: Simplify right side
   12,488.24x = 152,431,325.45
5. Step 5: Solve for x
   x = 152,431,325.45/12,488.24
6. Step 6: Final answer
   x = 12,205.99