Finding the Fourth Proportional to 12,667.70, 17,477.17 and 8,197.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.70 : 17,477.17 = 8,197.11 : x
2. Step 2: Convert to fraction form
   12,667.70/17,477.17 = 8,197.11/x
3. Step 3: Cross multiply
   12,667.70x = 17,477.17 × 8,197.11
4. Step 4: Simplify right side
   12,667.70x = 143,262,264.49
5. Step 5: Solve for x
   x = 143,262,264.49/12,667.70
6. Step 6: Final answer
   x = 11,309.25