Finding the Fourth Proportional to 3,967.20, 5,946.72 and 2,669.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.20 : 5,946.72 = 2,669.04 : x
2. Step 2: Convert to fraction form
   3,967.20/5,946.72 = 2,669.04/x
3. Step 3: Cross multiply
   3,967.20x = 5,946.72 × 2,669.04
4. Step 4: Simplify right side
   3,967.20x = 15,872,033.55
5. Step 5: Solve for x
   x = 15,872,033.55/3,967.20
6. Step 6: Final answer
   x = 4,000.82