Finding the Fourth Proportional to 3,986.40, 5,975.82 and 2,010.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.40 : 5,975.82 = 2,010.72 : x
2. Step 2: Convert to fraction form
   3,986.40/5,975.82 = 2,010.72/x
3. Step 3: Cross multiply
   3,986.40x = 5,975.82 × 2,010.72
4. Step 4: Simplify right side
   3,986.40x = 12,015,700.79
5. Step 5: Solve for x
   x = 12,015,700.79/3,986.40
6. Step 6: Final answer
   x = 3,014.17