Finding the Fourth Proportional to 20,956.72, 31,398.52 and 17,469.14

Step by Step Solution

1. Step 1: Write the proportion equation
   20,956.72 : 31,398.52 = 17,469.14 : x
2. Step 2: Convert to fraction form
   20,956.72/31,398.52 = 17,469.14/x
3. Step 3: Cross multiply
   20,956.72x = 31,398.52 × 17,469.14
4. Step 4: Simplify right side
   20,956.72x = 548,505,141.67
5. Step 5: Solve for x
   x = 548,505,141.67/20,956.72
6. Step 6: Final answer
   x = 26,173.23