Finding the Fourth Proportional to 12,074.67, 18,111.36 and 3,309.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.67 : 18,111.36 = 3,309.57 : x
2. Step 2: Convert to fraction form
   12,074.67/18,111.36 = 3,309.57/x
3. Step 3: Cross multiply
   12,074.67x = 18,111.36 × 3,309.57
4. Step 4: Simplify right side
   12,074.67x = 59,940,813.72
5. Step 5: Solve for x
   x = 59,940,813.72/12,074.67
6. Step 6: Final answer
   x = 4,964.18