Finding the Fourth Proportional to 11,590.89, 17,389.57 and 3,805.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,590.89 : 17,389.57 = 3,805.17 : x
2. Step 2: Convert to fraction form
   11,590.89/17,389.57 = 3,805.17/x
3. Step 3: Cross multiply
   11,590.89x = 17,389.57 × 3,805.17
4. Step 4: Simplify right side
   11,590.89x = 66,170,183.13
5. Step 5: Solve for x
   x = 66,170,183.13/11,590.89
6. Step 6: Final answer
   x = 5,708.81