Finding the Fourth Proportional to 21,571.69, 32,351.60 and 13,662.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,571.69 : 32,351.60 = 13,662.34 : x
2. Step 2: Convert to fraction form
   21,571.69/32,351.60 = 13,662.34/x
3. Step 3: Cross multiply
   21,571.69x = 32,351.60 × 13,662.34
4. Step 4: Simplify right side
   21,571.69x = 441,998,605.47
5. Step 5: Solve for x
   x = 441,998,605.47/21,571.69
6. Step 6: Final answer
   x = 20,489.75