Finding the Fourth Proportional to 23,017.91, 31,760.97 and 12,945.74

Step by Step Solution

1. Step 1: Write the proportion equation
   23,017.91 : 31,760.97 = 12,945.74 : x
2. Step 2: Convert to fraction form
   23,017.91/31,760.97 = 12,945.74/x
3. Step 3: Cross multiply
   23,017.91x = 31,760.97 × 12,945.74
4. Step 4: Simplify right side
   23,017.91x = 411,169,100.96
5. Step 5: Solve for x
   x = 411,169,100.96/23,017.91
6. Step 6: Final answer
   x = 17,863.01