Finding the Fourth Proportional to 5,316.24, 7,981.72 and 3,668.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,316.24 : 7,981.72 = 3,668.72 : x
2. Step 2: Convert to fraction form
   5,316.24/7,981.72 = 3,668.72/x
3. Step 3: Cross multiply
   5,316.24x = 7,981.72 × 3,668.72
4. Step 4: Simplify right side
   5,316.24x = 29,282,695.80
5. Step 5: Solve for x
   x = 29,282,695.80/5,316.24
6. Step 6: Final answer
   x = 5,508.16