Finding the Fourth Proportional to 21,340.17, 31,982.72 and 10,223.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,340.17 : 31,982.72 = 10,223.73 : x
2. Step 2: Convert to fraction form
   21,340.17/31,982.72 = 10,223.73/x
3. Step 3: Cross multiply
   21,340.17x = 31,982.72 × 10,223.73
4. Step 4: Simplify right side
   21,340.17x = 326,982,642.83
5. Step 5: Solve for x
   x = 326,982,642.83/21,340.17
6. Step 6: Final answer
   x = 15,322.40