Finding the Fourth Proportional to 8,100.82, 12,158.94 and 3,943.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.82 : 12,158.94 = 3,943.12 : x
2. Step 2: Convert to fraction form
   8,100.82/12,158.94 = 3,943.12/x
3. Step 3: Cross multiply
   8,100.82x = 12,158.94 × 3,943.12
4. Step 4: Simplify right side
   8,100.82x = 47,944,159.49
5. Step 5: Solve for x
   x = 47,944,159.49/8,100.82
6. Step 6: Final answer
   x = 5,918.43