Finding the Fourth Proportional to 12,061.49, 18,093.60 and 10,821.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,061.49 : 18,093.60 = 10,821.29 : x
2. Step 2: Convert to fraction form
   12,061.49/18,093.60 = 10,821.29/x
3. Step 3: Cross multiply
   12,061.49x = 18,093.60 × 10,821.29
4. Step 4: Simplify right side
   12,061.49x = 195,796,002.28
5. Step 5: Solve for x
   x = 195,796,002.28/12,061.49
6. Step 6: Final answer
   x = 16,233.16