Finding the Fourth Proportional to 22,831, 31,507.46 and 12,759.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,831 : 31,507.46 = 12,759.88 : x
2. Step 2: Convert to fraction form
   22,831/31,507.46 = 12,759.88/x
3. Step 3: Cross multiply
   22,831x = 31,507.46 × 12,759.88
4. Step 4: Simplify right side
   22,831x = 402,031,408.70
5. Step 5: Solve for x
   x = 402,031,408.70/22,831
6. Step 6: Final answer
   x = 17,609.01