Finding the Fourth Proportional to 8,111.87, 12,171.56 and 3,182.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.87 : 12,171.56 = 3,182.82 : x
2. Step 2: Convert to fraction form
   8,111.87/12,171.56 = 3,182.82/x
3. Step 3: Cross multiply
   8,111.87x = 12,171.56 × 3,182.82
4. Step 4: Simplify right side
   8,111.87x = 38,739,900.46
5. Step 5: Solve for x
   x = 38,739,900.46/8,111.87
6. Step 6: Final answer
   x = 4,775.70