Finding the Fourth Proportional to 5,668.72, 8,507.24 and 3,720.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,668.72 : 8,507.24 = 3,720.24 : x
2. Step 2: Convert to fraction form
   5,668.72/8,507.24 = 3,720.24/x
3. Step 3: Cross multiply
   5,668.72x = 8,507.24 × 3,720.24
4. Step 4: Simplify right side
   5,668.72x = 31,648,974.54
5. Step 5: Solve for x
   x = 31,648,974.54/5,668.72
6. Step 6: Final answer
   x = 5,583.09