Finding the Fourth Proportional to 5,665.33, 7,817.88 and 3,147.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,665.33 : 7,817.88 = 3,147.31 : x
2. Step 2: Convert to fraction form
   5,665.33/7,817.88 = 3,147.31/x
3. Step 3: Cross multiply
   5,665.33x = 7,817.88 × 3,147.31
4. Step 4: Simplify right side
   5,665.33x = 24,605,291.90
5. Step 5: Solve for x
   x = 24,605,291.90/5,665.33
6. Step 6: Final answer
   x = 4,343.13