Finding the Fourth Proportional to 11,987.60, 17,983.69 and 5,743.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.60 : 17,983.69 = 5,743.37 : x
2. Step 2: Convert to fraction form
   11,987.60/17,983.69 = 5,743.37/x
3. Step 3: Cross multiply
   11,987.60x = 17,983.69 × 5,743.37
4. Step 4: Simplify right side
   11,987.60x = 103,287,016.24
5. Step 5: Solve for x
   x = 103,287,016.24/11,987.60
6. Step 6: Final answer
   x = 8,616.16