Finding the Fourth Proportional to 23,005.27, 31,738.26 and 12,931.39

Step by Step Solution

1. Step 1: Write the proportion equation
   23,005.27 : 31,738.26 = 12,931.39 : x
2. Step 2: Convert to fraction form
   23,005.27/31,738.26 = 12,931.39/x
3. Step 3: Cross multiply
   23,005.27x = 31,738.26 × 12,931.39
4. Step 4: Simplify right side
   23,005.27x = 410,419,817.98
5. Step 5: Solve for x
   x = 410,419,817.98/23,005.27
6. Step 6: Final answer
   x = 17,840.25