Finding the Fourth Proportional to 21,441.85, 29,589.69 and 12,367.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,441.85 : 29,589.69 = 12,367.18 : x
2. Step 2: Convert to fraction form
   21,441.85/29,589.69 = 12,367.18/x
3. Step 3: Cross multiply
   21,441.85x = 29,589.69 × 12,367.18
4. Step 4: Simplify right side
   21,441.85x = 365,941,022.37
5. Step 5: Solve for x
   x = 365,941,022.37/21,441.85
6. Step 6: Final answer
   x = 17,066.67