Finding the Fourth Proportional to 23,170, 31,974.60 and 13,234

Step by Step Solution

1. Step 1: Write the proportion equation
   23,170 : 31,974.60 = 13,234 : x
2. Step 2: Convert to fraction form
   23,170/31,974.60 = 13,234/x
3. Step 3: Cross multiply
   23,170x = 31,974.60 × 13,234
4. Step 4: Simplify right side
   23,170x = 423,151,856.40
5. Step 5: Solve for x
   x = 423,151,856.40/23,170
6. Step 6: Final answer
   x = 18,262.92