Finding the Fourth Proportional to 11,636.78, 17,454.89 and 3,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,636.78 : 17,454.89 = 3,739.31 : x
2. Step 2: Convert to fraction form
   11,636.78/17,454.89 = 3,739.31/x
3. Step 3: Cross multiply
   11,636.78x = 17,454.89 × 3,739.31
4. Step 4: Simplify right side
   11,636.78x = 65,269,138.75
5. Step 5: Solve for x
   x = 65,269,138.75/11,636.78
6. Step 6: Final answer
   x = 5,608.87