Finding the Fourth Proportional to 20,726.72, 31,105.86 and 15,194.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,726.72 : 31,105.86 = 15,194.12 : x
2. Step 2: Convert to fraction form
   20,726.72/31,105.86 = 15,194.12/x
3. Step 3: Cross multiply
   20,726.72x = 31,105.86 × 15,194.12
4. Step 4: Simplify right side
   20,726.72x = 472,626,169.54
5. Step 5: Solve for x
   x = 472,626,169.54/20,726.72
6. Step 6: Final answer
   x = 22,802.75