Finding the Fourth Proportional to 11,987.55, 17,983.49 and 3,667.41

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987.55 : 17,983.49 = 3,667.41 : x
2. Step 2: Convert to fraction form
   11,987.55/17,983.49 = 3,667.41/x
3. Step 3: Cross multiply
   11,987.55x = 17,983.49 × 3,667.41
4. Step 4: Simplify right side
   11,987.55x = 65,952,812.72
5. Step 5: Solve for x
   x = 65,952,812.72/11,987.55
6. Step 6: Final answer
   x = 5,501.78