Finding the Fourth Proportional to 21,642.42, 29,868.04 and 12,084.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,642.42 : 29,868.04 = 12,084.18 : x
2. Step 2: Convert to fraction form
   21,642.42/29,868.04 = 12,084.18/x
3. Step 3: Cross multiply
   21,642.42x = 29,868.04 × 12,084.18
4. Step 4: Simplify right side
   21,642.42x = 360,930,771.61
5. Step 5: Solve for x
   x = 360,930,771.61/21,642.42
6. Step 6: Final answer
   x = 16,677.01