Finding the Fourth Proportional to 12,667.24, 17,480.34 and 7,078.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.24 : 17,480.34 = 7,078.12 : x
2. Step 2: Convert to fraction form
   12,667.24/17,480.34 = 7,078.12/x
3. Step 3: Cross multiply
   12,667.24x = 17,480.34 × 7,078.12
4. Step 4: Simplify right side
   12,667.24x = 123,727,944.16
5. Step 5: Solve for x
   x = 123,727,944.16/12,667.24
6. Step 6: Final answer
   x = 9,767.55