Finding the Fourth Proportional to 45,076.72, 67,616.10 and 13,912

Step by Step Solution

1. Step 1: Write the proportion equation
   45,076.72 : 67,616.10 = 13,912 : x
2. Step 2: Convert to fraction form
   45,076.72/67,616.10 = 13,912/x
3. Step 3: Cross multiply
   45,076.72x = 67,616.10 × 13,912
4. Step 4: Simplify right side
   45,076.72x = 940,675,183.20
5. Step 5: Solve for x
   x = 940,675,183.20/45,076.72
6. Step 6: Final answer
   x = 20,868.31