Finding the Fourth Proportional to 23,162.15, 31,962.40 and 12,953.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,162.15 : 31,962.40 = 12,953.12 : x
2. Step 2: Convert to fraction form
   23,162.15/31,962.40 = 12,953.12/x
3. Step 3: Cross multiply
   23,162.15x = 31,962.40 × 12,953.12
4. Step 4: Simplify right side
   23,162.15x = 414,012,610.49
5. Step 5: Solve for x
   x = 414,012,610.49/23,162.15
6. Step 6: Final answer
   x = 17,874.53