Finding the Fourth Proportional to 8,141.36, 12,212.56 and 3,146.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.36 : 12,212.56 = 3,146.12 : x
2. Step 2: Convert to fraction form
   8,141.36/12,212.56 = 3,146.12/x
3. Step 3: Cross multiply
   8,141.36x = 12,212.56 × 3,146.12
4. Step 4: Simplify right side
   8,141.36x = 38,422,179.27
5. Step 5: Solve for x
   x = 38,422,179.27/8,141.36
6. Step 6: Final answer
   x = 4,719.38