Finding the Fourth Proportional to 3,996.04, 5,512.98 and 2,947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.04 : 5,512.98 = 2,947.72 : x
2. Step 2: Convert to fraction form
   3,996.04/5,512.98 = 2,947.72/x
3. Step 3: Cross multiply
   3,996.04x = 5,512.98 × 2,947.72
4. Step 4: Simplify right side
   3,996.04x = 16,250,721.41
5. Step 5: Solve for x
   x = 16,250,721.41/3,996.04
6. Step 6: Final answer
   x = 4,066.71