Finding the Fourth Proportional to 12,383.33, 17,087.40 and 7,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,383.33 : 17,087.40 = 7,078.50 : x
2. Step 2: Convert to fraction form
   12,383.33/17,087.40 = 7,078.50/x
3. Step 3: Cross multiply
   12,383.33x = 17,087.40 × 7,078.50
4. Step 4: Simplify right side
   12,383.33x = 120,953,160.90
5. Step 5: Solve for x
   x = 120,953,160.90/12,383.33
6. Step 6: Final answer
   x = 9,767.42