Finding the Fourth Proportional to 21,171.24, 31,696.38 and 14,233.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,171.24 : 31,696.38 = 14,233.32 : x
2. Step 2: Convert to fraction form
   21,171.24/31,696.38 = 14,233.32/x
3. Step 3: Cross multiply
   21,171.24x = 31,696.38 × 14,233.32
4. Step 4: Simplify right side
   21,171.24x = 451,144,719.38
5. Step 5: Solve for x
   x = 451,144,719.38/21,171.24
6. Step 6: Final answer
   x = 21,309.32