Finding the Fourth Proportional to 23,040.79, 31,796.35 and 12,969.38

Step by Step Solution

1. Step 1: Write the proportion equation
   23,040.79 : 31,796.35 = 12,969.38 : x
2. Step 2: Convert to fraction form
   23,040.79/31,796.35 = 12,969.38/x
3. Step 3: Cross multiply
   23,040.79x = 31,796.35 × 12,969.38
4. Step 4: Simplify right side
   23,040.79x = 412,378,992.83
5. Step 5: Solve for x
   x = 412,378,992.83/23,040.79
6. Step 6: Final answer
   x = 17,897.78