Finding the Fourth Proportional to 21,850.42, 30,153.54 and 11,914.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,850.42 : 30,153.54 = 11,914.42 : x
2. Step 2: Convert to fraction form
   21,850.42/30,153.54 = 11,914.42/x
3. Step 3: Cross multiply
   21,850.42x = 30,153.54 × 11,914.42
4. Step 4: Simplify right side
   21,850.42x = 359,261,940.05
5. Step 5: Solve for x
   x = 359,261,940.05/21,850.42
6. Step 6: Final answer
   x = 16,441.88