Finding the Fourth Proportional to 11,403.57, 17,105.23 and 3,612.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,403.57 : 17,105.23 = 3,612.38 : x
2. Step 2: Convert to fraction form
   11,403.57/17,105.23 = 3,612.38/x
3. Step 3: Cross multiply
   11,403.57x = 17,105.23 × 3,612.38
4. Step 4: Simplify right side
   11,403.57x = 61,790,590.75
5. Step 5: Solve for x
   x = 61,790,590.75/11,403.57
6. Step 6: Final answer
   x = 5,418.53