Finding the Fourth Proportional to 12,371.76, 18,561.71 and 8,228.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,371.76 : 18,561.71 = 8,228.07 : x
2. Step 2: Convert to fraction form
   12,371.76/18,561.71 = 8,228.07/x
3. Step 3: Cross multiply
   12,371.76x = 18,561.71 × 8,228.07
4. Step 4: Simplify right side
   12,371.76x = 152,726,969.31
5. Step 5: Solve for x
   x = 152,726,969.31/12,371.76
6. Step 6: Final answer
   x = 12,344.81