Finding the Fourth Proportional to 12,628.72, 18,945.24 and 3,862.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,628.72 : 18,945.24 = 3,862.72 : x
2. Step 2: Convert to fraction form
   12,628.72/18,945.24 = 3,862.72/x
3. Step 3: Cross multiply
   12,628.72x = 18,945.24 × 3,862.72
4. Step 4: Simplify right side
   12,628.72x = 73,180,157.45
5. Step 5: Solve for x
   x = 73,180,157.45/12,628.72
6. Step 6: Final answer
   x = 5,794.74