Finding the Fourth Proportional to 23,036, 31,789.82 and 12,964.61

Step by Step Solution

1. Step 1: Write the proportion equation
   23,036 : 31,789.82 = 12,964.61 : x
2. Step 2: Convert to fraction form
   23,036/31,789.82 = 12,964.61/x
3. Step 3: Cross multiply
   23,036x = 31,789.82 × 12,964.61
4. Step 4: Simplify right side
   23,036x = 412,142,618.27
5. Step 5: Solve for x
   x = 412,142,618.27/23,036
6. Step 6: Final answer
   x = 17,891.24