Finding the Fourth Proportional to 5,665.50, 7,818.48 and 3,309.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,665.50 : 7,818.48 = 3,309.30 : x
2. Step 2: Convert to fraction form
   5,665.50/7,818.48 = 3,309.30/x
3. Step 3: Cross multiply
   5,665.50x = 7,818.48 × 3,309.30
4. Step 4: Simplify right side
   5,665.50x = 25,873,695.86
5. Step 5: Solve for x
   x = 25,873,695.86/5,665.50
6. Step 6: Final answer
   x = 4,566.89