Finding the Fourth Proportional to 12,667.34, 17,387.28 and 12,126.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.34 : 17,387.28 = 12,126.06 : x
2. Step 2: Convert to fraction form
   12,667.34/17,387.28 = 12,126.06/x
3. Step 3: Cross multiply
   12,667.34x = 17,387.28 × 12,126.06
4. Step 4: Simplify right side
   12,667.34x = 210,839,200.52
5. Step 5: Solve for x
   x = 210,839,200.52/12,667.34
6. Step 6: Final answer
   x = 16,644.32