Finding the Fourth Proportional to 5,665.49, 7,818.61 and 3,147.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,665.49 : 7,818.61 = 3,147.58 : x
2. Step 2: Convert to fraction form
   5,665.49/7,818.61 = 3,147.58/x
3. Step 3: Cross multiply
   5,665.49x = 7,818.61 × 3,147.58
4. Step 4: Simplify right side
   5,665.49x = 24,609,673.05
5. Step 5: Solve for x
   x = 24,609,673.05/5,665.49
6. Step 6: Final answer
   x = 4,343.79