Finding the Fourth Proportional to 23,716.80, 32,728.59 and 13,105.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,716.80 : 32,728.59 = 13,105.80 : x
2. Step 2: Convert to fraction form
   23,716.80/32,728.59 = 13,105.80/x
3. Step 3: Cross multiply
   23,716.80x = 32,728.59 × 13,105.80
4. Step 4: Simplify right side
   23,716.80x = 428,934,354.82
5. Step 5: Solve for x
   x = 428,934,354.82/23,716.80
6. Step 6: Final answer
   x = 18,085.68