Finding the Fourth Proportional to 21,914.72, 30,245.28 and 12,484.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,914.72 : 30,245.28 = 12,484.16 : x
2. Step 2: Convert to fraction form
   21,914.72/30,245.28 = 12,484.16/x
3. Step 3: Cross multiply
   21,914.72x = 30,245.28 × 12,484.16
4. Step 4: Simplify right side
   21,914.72x = 377,586,914.76
5. Step 5: Solve for x
   x = 377,586,914.76/21,914.72
6. Step 6: Final answer
   x = 17,229.83