Finding the Fourth Proportional to 5,789.17, 7,986.20 and 3,665.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,789.17 : 7,986.20 = 3,665.05 : x
2. Step 2: Convert to fraction form
   5,789.17/7,986.20 = 3,665.05/x
3. Step 3: Cross multiply
   5,789.17x = 7,986.20 × 3,665.05
4. Step 4: Simplify right side
   5,789.17x = 29,269,784.02
5. Step 5: Solve for x
   x = 29,269,784.02/5,789.17
6. Step 6: Final answer
   x = 5,055.95