Finding the Fourth Proportional to 11,590.10, 17,383.30 and 3,691.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,590.10 : 17,383.30 = 3,691.59 : x
2. Step 2: Convert to fraction form
   11,590.10/17,383.30 = 3,691.59/x
3. Step 3: Cross multiply
   11,590.10x = 17,383.30 × 3,691.59
4. Step 4: Simplify right side
   11,590.10x = 64,172,016.45
5. Step 5: Solve for x
   x = 64,172,016.45/11,590.10
6. Step 6: Final answer
   x = 5,536.80