Finding the Fourth Proportional to 3,738.48, 5,627.20 and 3,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738.48 : 5,627.20 = 3,174.72 : x
2. Step 2: Convert to fraction form
   3,738.48/5,627.20 = 3,174.72/x
3. Step 3: Cross multiply
   3,738.48x = 5,627.20 × 3,174.72
4. Step 4: Simplify right side
   3,738.48x = 17,864,784.38
5. Step 5: Solve for x
   x = 17,864,784.38/3,738.48
6. Step 6: Final answer
   x = 4,778.62