Finding the Fourth Proportional to 5,781.83, 8,658.76 and 3,309.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,781.83 : 8,658.76 = 3,309.15 : x
2. Step 2: Convert to fraction form
   5,781.83/8,658.76 = 3,309.15/x
3. Step 3: Cross multiply
   5,781.83x = 8,658.76 × 3,309.15
4. Step 4: Simplify right side
   5,781.83x = 28,653,127.38
5. Step 5: Solve for x
   x = 28,653,127.38/5,781.83
6. Step 6: Final answer
   x = 4,955.72