Finding the Fourth Proportional to 8,243.40, 12,356.82 and 4,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,243.40 : 12,356.82 = 4,086.42 : x
2. Step 2: Convert to fraction form
   8,243.40/12,356.82 = 4,086.42/x
3. Step 3: Cross multiply
   8,243.40x = 12,356.82 × 4,086.42
4. Step 4: Simplify right side
   8,243.40x = 50,495,156.38
5. Step 5: Solve for x
   x = 50,495,156.38/8,243.40
6. Step 6: Final answer
   x = 6,125.53