Finding the Fourth Proportional to 3,871.20, 5,801.04 and 3,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.20 : 5,801.04 = 3,738.72 : x
2. Step 2: Convert to fraction form
   3,871.20/5,801.04 = 3,738.72/x
3. Step 3: Cross multiply
   3,871.20x = 5,801.04 × 3,738.72
4. Step 4: Simplify right side
   3,871.20x = 21,688,464.27
5. Step 5: Solve for x
   x = 21,688,464.27/3,871.20
6. Step 6: Final answer
   x = 5,602.52