Finding the Fourth Proportional to 3,663.72, 5,490.72 and 3,174.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.72 : 5,490.72 = 3,174.48 : x
2. Step 2: Convert to fraction form
   3,663.72/5,490.72 = 3,174.48/x
3. Step 3: Cross multiply
   3,663.72x = 5,490.72 × 3,174.48
4. Step 4: Simplify right side
   3,663.72x = 17,430,180.83
5. Step 5: Solve for x
   x = 17,430,180.83/3,663.72
6. Step 6: Final answer
   x = 4,757.51