Finding the Fourth Proportional to 3,997.20, 5,514.72 and 2,671.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.20 : 5,514.72 = 2,671.74 : x
2. Step 2: Convert to fraction form
   3,997.20/5,514.72 = 2,671.74/x
3. Step 3: Cross multiply
   3,997.20x = 5,514.72 × 2,671.74
4. Step 4: Simplify right side
   3,997.20x = 14,733,898.01
5. Step 5: Solve for x
   x = 14,733,898.01/3,997.20
6. Step 6: Final answer
   x = 3,686.05