Finding the Fourth Proportional to 22,078.72, 33,117.24 and 7,287.20

Step by Step Solution

1. Step 1: Write the proportion equation
   22,078.72 : 33,117.24 = 7,287.20 : x
2. Step 2: Convert to fraction form
   22,078.72/33,117.24 = 7,287.20/x
3. Step 3: Cross multiply
   22,078.72x = 33,117.24 × 7,287.20
4. Step 4: Simplify right side
   22,078.72x = 241,331,951.33
5. Step 5: Solve for x
   x = 241,331,951.33/22,078.72
6. Step 6: Final answer
   x = 10,930.52