Finding the Fourth Proportional to 12,667.98, 17,424.05 and 10,382.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.98 : 17,424.05 = 10,382.90 : x
2. Step 2: Convert to fraction form
   12,667.98/17,424.05 = 10,382.90/x
3. Step 3: Cross multiply
   12,667.98x = 17,424.05 × 10,382.90
4. Step 4: Simplify right side
   12,667.98x = 180,912,029.71
5. Step 5: Solve for x
   x = 180,912,029.71/12,667.98
6. Step 6: Final answer
   x = 14,281.05