Finding the Fourth Proportional to 12,200.88, 18,257.52 and 7,797.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.88 : 18,257.52 = 7,797.72 : x
2. Step 2: Convert to fraction form
   12,200.88/18,257.52 = 7,797.72/x
3. Step 3: Cross multiply
   12,200.88x = 18,257.52 × 7,797.72
4. Step 4: Simplify right side
   12,200.88x = 142,367,028.85
5. Step 5: Solve for x
   x = 142,367,028.85/12,200.88
6. Step 6: Final answer
   x = 11,668.59