Finding the Fourth Proportional to 12,162.15, 18,241.40 and 4,771.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.15 : 18,241.40 = 4,771.71 : x
2. Step 2: Convert to fraction form
   12,162.15/18,241.40 = 4,771.71/x
3. Step 3: Cross multiply
   12,162.15x = 18,241.40 × 4,771.71
4. Step 4: Simplify right side
   12,162.15x = 87,042,682.72
5. Step 5: Solve for x
   x = 87,042,682.72/12,162.15
6. Step 6: Final answer
   x = 7,156.85