Finding the Fourth Proportional to 12,227.64, 18,344.30 and 3,906.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,227.64 : 18,344.30 = 3,906.51 : x
2. Step 2: Convert to fraction form
   12,227.64/18,344.30 = 3,906.51/x
3. Step 3: Cross multiply
   12,227.64x = 18,344.30 × 3,906.51
4. Step 4: Simplify right side
   12,227.64x = 71,662,171.86
5. Step 5: Solve for x
   x = 71,662,171.86/12,227.64
6. Step 6: Final answer
   x = 5,860.67