Finding the Fourth Proportional to 23,717.31, 32,729.55 and 13,107.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,717.31 : 32,729.55 = 13,107.12 : x
2. Step 2: Convert to fraction form
   23,717.31/32,729.55 = 13,107.12/x
3. Step 3: Cross multiply
   23,717.31x = 32,729.55 × 13,107.12
4. Step 4: Simplify right side
   23,717.31x = 428,990,139.40
5. Step 5: Solve for x
   x = 428,990,139.40/23,717.31
6. Step 6: Final answer
   x = 18,087.64