Finding the Fourth Proportional to 3,570.72, 5,335.61 and 2,721.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,570.72 : 5,335.61 = 2,721.72 : x
2. Step 2: Convert to fraction form
   3,570.72/5,335.61 = 2,721.72/x
3. Step 3: Cross multiply
   3,570.72x = 5,335.61 × 2,721.72
4. Step 4: Simplify right side
   3,570.72x = 14,522,036.45
5. Step 5: Solve for x
   x = 14,522,036.45/3,570.72
6. Step 6: Final answer
   x = 4,066.98