Finding the Fourth Proportional to 12,625, 18,936.72 and 3,859.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,625 : 18,936.72 = 3,859.12 : x
2. Step 2: Convert to fraction form
   12,625/18,936.72 = 3,859.12/x
3. Step 3: Cross multiply
   12,625x = 18,936.72 × 3,859.12
4. Step 4: Simplify right side
   12,625x = 73,079,074.89
5. Step 5: Solve for x
   x = 73,079,074.89/12,625
6. Step 6: Final answer
   x = 5,788.44