Finding the Fourth Proportional to 12,147.61, 18,222.06 and 3,828.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.61 : 18,222.06 = 3,828.27 : x
2. Step 2: Convert to fraction form
   12,147.61/18,222.06 = 3,828.27/x
3. Step 3: Cross multiply
   12,147.61x = 18,222.06 × 3,828.27
4. Step 4: Simplify right side
   12,147.61x = 69,758,965.64
5. Step 5: Solve for x
   x = 69,758,965.64/12,147.61
6. Step 6: Final answer
   x = 5,742.61