Finding the Fourth Proportional to 3,966.06, 5,952.78 and 2,019.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,966.06 : 5,952.78 = 2,019.72 : x
2. Step 2: Convert to fraction form
   3,966.06/5,952.78 = 2,019.72/x
3. Step 3: Cross multiply
   3,966.06x = 5,952.78 × 2,019.72
4. Step 4: Simplify right side
   3,966.06x = 12,022,948.82
5. Step 5: Solve for x
   x = 12,022,948.82/3,966.06
6. Step 6: Final answer
   x = 3,031.46