Finding the Fourth Proportional to 5,443.26, 8,162.16 and 2,665.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.26 : 8,162.16 = 2,665.74 : x
2. Step 2: Convert to fraction form
   5,443.26/8,162.16 = 2,665.74/x
3. Step 3: Cross multiply
   5,443.26x = 8,162.16 × 2,665.74
4. Step 4: Simplify right side
   5,443.26x = 21,758,196.40
5. Step 5: Solve for x
   x = 21,758,196.40/5,443.26
6. Step 6: Final answer
   x = 3,997.27