Finding the Fourth Proportional to 23,007.31, 31,749.37 and 12,936.17

Step by Step Solution

1. Step 1: Write the proportion equation
   23,007.31 : 31,749.37 = 12,936.17 : x
2. Step 2: Convert to fraction form
   23,007.31/31,749.37 = 12,936.17/x
3. Step 3: Cross multiply
   23,007.31x = 31,749.37 × 12,936.17
4. Step 4: Simplify right side
   23,007.31x = 410,715,294.75
5. Step 5: Solve for x
   x = 410,715,294.75/23,007.31
6. Step 6: Final answer
   x = 17,851.51