Finding the Fourth Proportional to 8,936.71, 12,334.41 and 5,162.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,936.71 : 12,334.41 = 5,162.31 : x
2. Step 2: Convert to fraction form
   8,936.71/12,334.41 = 5,162.31/x
3. Step 3: Cross multiply
   8,936.71x = 12,334.41 × 5,162.31
4. Step 4: Simplify right side
   8,936.71x = 63,674,048.09
5. Step 5: Solve for x
   x = 63,674,048.09/8,936.71
6. Step 6: Final answer
   x = 7,125.00