Finding the Fourth Proportional to 8,272.31, 12,405.83 and 2,724.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.31 : 12,405.83 = 2,724.42 : x
2. Step 2: Convert to fraction form
   8,272.31/12,405.83 = 2,724.42/x
3. Step 3: Cross multiply
   8,272.31x = 12,405.83 × 2,724.42
4. Step 4: Simplify right side
   8,272.31x = 33,798,691.37
5. Step 5: Solve for x
   x = 33,798,691.37/8,272.31
6. Step 6: Final answer
   x = 4,085.76