Finding the Fourth Proportional to 3,996.48, 5,515.32 and 2,670.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.48 : 5,515.32 = 2,670.72 : x
2. Step 2: Convert to fraction form
   3,996.48/5,515.32 = 2,670.72/x
3. Step 3: Cross multiply
   3,996.48x = 5,515.32 × 2,670.72
4. Step 4: Simplify right side
   3,996.48x = 14,729,875.43
5. Step 5: Solve for x
   x = 14,729,875.43/3,996.48
6. Step 6: Final answer
   x = 3,685.71