Finding the Fourth Proportional to 8,112.42, 12,162.99 and 3,182.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,112.42 : 12,162.99 = 3,182.55 : x
2. Step 2: Convert to fraction form
   8,112.42/12,162.99 = 3,182.55/x
3. Step 3: Cross multiply
   8,112.42x = 12,162.99 × 3,182.55
4. Step 4: Simplify right side
   8,112.42x = 38,709,323.82
5. Step 5: Solve for x
   x = 38,709,323.82/8,112.42
6. Step 6: Final answer
   x = 4,771.61