Finding the Fourth Proportional to 12,434.70, 17,154.18 and 8,667.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.70 : 17,154.18 = 8,667.12 : x
2. Step 2: Convert to fraction form
   12,434.70/17,154.18 = 8,667.12/x
3. Step 3: Cross multiply
   12,434.70x = 17,154.18 × 8,667.12
4. Step 4: Simplify right side
   12,434.70x = 148,677,336.56
5. Step 5: Solve for x
   x = 148,677,336.56/12,434.70
6. Step 6: Final answer
   x = 11,956.65