Finding the Fourth Proportional to 21,770, 30,042.72 and 11,834

Step by Step Solution

1. Step 1: Write the proportion equation
   21,770 : 30,042.72 = 11,834 : x
2. Step 2: Convert to fraction form
   21,770/30,042.72 = 11,834/x
3. Step 3: Cross multiply
   21,770x = 30,042.72 × 11,834
4. Step 4: Simplify right side
   21,770x = 355,525,548.48
5. Step 5: Solve for x
   x = 355,525,548.48/21,770
6. Step 6: Final answer
   x = 16,330.99