Finding the Fourth Proportional to 11,947.16, 17,920.76 and 3,627.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,947.16 : 17,920.76 = 3,627.24 : x
2. Step 2: Convert to fraction form
   11,947.16/17,920.76 = 3,627.24/x
3. Step 3: Cross multiply
   11,947.16x = 17,920.76 × 3,627.24
4. Step 4: Simplify right side
   11,947.16x = 65,002,879.37
5. Step 5: Solve for x
   x = 65,002,879.37/11,947.16
6. Step 6: Final answer
   x = 5,440.87