Finding the Fourth Proportional to 12,146.61, 18,220.56 and 3,827.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.61 : 18,220.56 = 3,827.27 : x
2. Step 2: Convert to fraction form
   12,146.61/18,220.56 = 3,827.27/x
3. Step 3: Cross multiply
   12,146.61x = 18,220.56 × 3,827.27
4. Step 4: Simplify right side
   12,146.61x = 69,735,048.22
5. Step 5: Solve for x
   x = 69,735,048.22/12,146.61
6. Step 6: Final answer
   x = 5,741.11