Finding the Fourth Proportional to 23,037, 31,791.20 and 12,965.61

Step by Step Solution

1. Step 1: Write the proportion equation
   23,037 : 31,791.20 = 12,965.61 : x
2. Step 2: Convert to fraction form
   23,037/31,791.20 = 12,965.61/x
3. Step 3: Cross multiply
   23,037x = 31,791.20 × 12,965.61
4. Step 4: Simplify right side
   23,037x = 412,192,300.63
5. Step 5: Solve for x
   x = 412,192,300.63/23,037
6. Step 6: Final answer
   x = 17,892.62