Finding the Fourth Proportional to 21,942.24, 30,280.37 and 11,870.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,942.24 : 30,280.37 = 11,870.73 : x
2. Step 2: Convert to fraction form
   21,942.24/30,280.37 = 11,870.73/x
3. Step 3: Cross multiply
   21,942.24x = 30,280.37 × 11,870.73
4. Step 4: Simplify right side
   21,942.24x = 359,450,096.57
5. Step 5: Solve for x
   x = 359,450,096.57/21,942.24
6. Step 6: Final answer
   x = 16,381.65