Finding the Fourth Proportional to 21,874.50, 30,188.43 and 12,446.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,874.50 : 30,188.43 = 12,446.10 : x
2. Step 2: Convert to fraction form
   21,874.50/30,188.43 = 12,446.10/x
3. Step 3: Cross multiply
   21,874.50x = 30,188.43 × 12,446.10
4. Step 4: Simplify right side
   21,874.50x = 375,728,218.62
5. Step 5: Solve for x
   x = 375,728,218.62/21,874.50
6. Step 6: Final answer
   x = 17,176.54