Finding the Fourth Proportional to 13,321.74, 18,383.30 and 8,285.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,321.74 : 18,383.30 = 8,285.82 : x
2. Step 2: Convert to fraction form
   13,321.74/18,383.30 = 8,285.82/x
3. Step 3: Cross multiply
   13,321.74x = 18,383.30 × 8,285.82
4. Step 4: Simplify right side
   13,321.74x = 152,320,673.38
5. Step 5: Solve for x
   x = 152,320,673.38/13,321.74
6. Step 6: Final answer
   x = 11,433.99