Finding the Fourth Proportional to 21,323.40, 31,972.33 and 10,081.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,323.40 : 31,972.33 = 10,081.63 : x
2. Step 2: Convert to fraction form
   21,323.40/31,972.33 = 10,081.63/x
3. Step 3: Cross multiply
   21,323.40x = 31,972.33 × 10,081.63
4. Step 4: Simplify right side
   21,323.40x = 322,333,201.30
5. Step 5: Solve for x
   x = 322,333,201.30/21,323.40
6. Step 6: Final answer
   x = 15,116.41