Finding the Fourth Proportional to 23,108.79, 31,890.14 and 12,498.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,108.79 : 31,890.14 = 12,498.42 : x
2. Step 2: Convert to fraction form
   23,108.79/31,890.14 = 12,498.42/x
3. Step 3: Cross multiply
   23,108.79x = 31,890.14 × 12,498.42
4. Step 4: Simplify right side
   23,108.79x = 398,576,363.58
5. Step 5: Solve for x
   x = 398,576,363.58/23,108.79
6. Step 6: Final answer
   x = 17,247.82