Finding the Fourth Proportional to 5,665.31, 7,819.37 and 3,148.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,665.31 : 7,819.37 = 3,148.28 : x
2. Step 2: Convert to fraction form
   5,665.31/7,819.37 = 3,148.28/x
3. Step 3: Cross multiply
   5,665.31x = 7,819.37 × 3,148.28
4. Step 4: Simplify right side
   5,665.31x = 24,617,566.18
5. Step 5: Solve for x
   x = 24,617,566.18/5,665.31
6. Step 6: Final answer
   x = 4,345.32