Finding the Fourth Proportional to 14,436.72, 21,640.50 and 5,668.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,436.72 : 21,640.50 = 5,668.20 : x
2. Step 2: Convert to fraction form
   14,436.72/21,640.50 = 5,668.20/x
3. Step 3: Cross multiply
   14,436.72x = 21,640.50 × 5,668.20
4. Step 4: Simplify right side
   14,436.72x = 122,662,682.10
5. Step 5: Solve for x
   x = 122,662,682.10/14,436.72
6. Step 6: Final answer
   x = 8,496.58