Finding the Fourth Proportional to 12,074.18, 18,111.08 and 3,309.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.18 : 18,111.08 = 3,309.09 : x
2. Step 2: Convert to fraction form
   12,074.18/18,111.08 = 3,309.09/x
3. Step 3: Cross multiply
   12,074.18x = 18,111.08 × 3,309.09
4. Step 4: Simplify right side
   12,074.18x = 59,931,193.72
5. Step 5: Solve for x
   x = 59,931,193.72/12,074.18
6. Step 6: Final answer
   x = 4,963.58