Finding the Fourth Proportional to 21,842.67, 30,142.73 and 12,411.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,842.67 : 30,142.73 = 12,411.24 : x
2. Step 2: Convert to fraction form
   21,842.67/30,142.73 = 12,411.24/x
3. Step 3: Cross multiply
   21,842.67x = 30,142.73 × 12,411.24
4. Step 4: Simplify right side
   21,842.67x = 374,108,574.28
5. Step 5: Solve for x
   x = 374,108,574.28/21,842.67
6. Step 6: Final answer
   x = 17,127.42