Finding the Fourth Proportional to 12,408.10, 18,601.69 and 5,382.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,408.10 : 18,601.69 = 5,382.83 : x
2. Step 2: Convert to fraction form
   12,408.10/18,601.69 = 5,382.83/x
3. Step 3: Cross multiply
   12,408.10x = 18,601.69 × 5,382.83
4. Step 4: Simplify right side
   12,408.10x = 100,129,734.98
5. Step 5: Solve for x
   x = 100,129,734.98/12,408.10
6. Step 6: Final answer
   x = 8,069.71