Finding the Fourth Proportional to 5,570.24, 8,353.92 and 2,642.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,570.24 : 8,353.92 = 2,642.72 : x
2. Step 2: Convert to fraction form
   5,570.24/8,353.92 = 2,642.72/x
3. Step 3: Cross multiply
   5,570.24x = 8,353.92 × 2,642.72
4. Step 4: Simplify right side
   5,570.24x = 22,077,071.46
5. Step 5: Solve for x
   x = 22,077,071.46/5,570.24
6. Step 6: Final answer
   x = 3,963.40