Finding the Fourth Proportional to 12,383.82, 18,576.54 and 3,618

Step by Step Solution

1. Step 1: Write the proportion equation
   12,383.82 : 18,576.54 = 3,618 : x
2. Step 2: Convert to fraction form
   12,383.82/18,576.54 = 3,618/x
3. Step 3: Cross multiply
   12,383.82x = 18,576.54 × 3,618
4. Step 4: Simplify right side
   12,383.82x = 67,209,921.72
5. Step 5: Solve for x
   x = 67,209,921.72/12,383.82
6. Step 6: Final answer
   x = 5,427.24