Finding the Fourth Proportional to 12,667.46, 17,480.97 and 7,078.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.46 : 17,480.97 = 7,078.46 : x
2. Step 2: Convert to fraction form
   12,667.46/17,480.97 = 7,078.46/x
3. Step 3: Cross multiply
   12,667.46x = 17,480.97 × 7,078.46
4. Step 4: Simplify right side
   12,667.46x = 123,738,346.91
5. Step 5: Solve for x
   x = 123,738,346.91/12,667.46
6. Step 6: Final answer
   x = 9,768.21