Finding the Fourth Proportional to 8,111.91, 12,162.24 and 3,182.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.91 : 12,162.24 = 3,182.05 : x
2. Step 2: Convert to fraction form
   8,111.91/12,162.24 = 3,182.05/x
3. Step 3: Cross multiply
   8,111.91x = 12,162.24 × 3,182.05
4. Step 4: Simplify right side
   8,111.91x = 38,700,855.79
5. Step 5: Solve for x
   x = 38,700,855.79/8,111.91
6. Step 6: Final answer
   x = 4,770.87