Finding the Fourth Proportional to 12,185.28, 18,280.17 and 3,867.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.28 : 18,280.17 = 3,867.42 : x
2. Step 2: Convert to fraction form
   12,185.28/18,280.17 = 3,867.42/x
3. Step 3: Cross multiply
   12,185.28x = 18,280.17 × 3,867.42
4. Step 4: Simplify right side
   12,185.28x = 70,697,095.06
5. Step 5: Solve for x
   x = 70,697,095.06/12,185.28
6. Step 6: Final answer
   x = 5,801.84