Finding the Fourth Proportional to 12,074.32, 18,111.60 and 3,309.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.32 : 18,111.60 = 3,309.23 : x
2. Step 2: Convert to fraction form
   12,074.32/18,111.60 = 3,309.23/x
3. Step 3: Cross multiply
   12,074.32x = 18,111.60 × 3,309.23
4. Step 4: Simplify right side
   12,074.32x = 59,935,444.41
5. Step 5: Solve for x
   x = 59,935,444.41/12,074.32
6. Step 6: Final answer
   x = 4,963.88