Finding the Fourth Proportional to 12,309.19, 18,367.72 and 10,983.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309.19 : 18,367.72 = 10,983.83 : x
2. Step 2: Convert to fraction form
   12,309.19/18,367.72 = 10,983.83/x
3. Step 3: Cross multiply
   12,309.19x = 18,367.72 × 10,983.83
4. Step 4: Simplify right side
   12,309.19x = 201,747,794.67
5. Step 5: Solve for x
   x = 201,747,794.67/12,309.19
6. Step 6: Final answer
   x = 16,390.02