Finding the Fourth Proportional to 12,383.56, 17,089.31 and 7,078.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,383.56 : 17,089.31 = 7,078.49 : x
2. Step 2: Convert to fraction form
   12,383.56/17,089.31 = 7,078.49/x
3. Step 3: Cross multiply
   12,383.56x = 17,089.31 × 7,078.49
4. Step 4: Simplify right side
   12,383.56x = 120,966,593.30
5. Step 5: Solve for x
   x = 120,966,593.30/12,383.56
6. Step 6: Final answer
   x = 9,768.32