Finding the Fourth Proportional to 3,387.30, 5,074.72 and 1,996.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,387.30 : 5,074.72 = 1,996.72 : x
2. Step 2: Convert to fraction form
   3,387.30/5,074.72 = 1,996.72/x
3. Step 3: Cross multiply
   3,387.30x = 5,074.72 × 1,996.72
4. Step 4: Simplify right side
   3,387.30x = 10,132,794.92
5. Step 5: Solve for x
   x = 10,132,794.92/3,387.30
6. Step 6: Final answer
   x = 2,991.41