Finding the Fourth Proportional to 21,667.45, 29,898.07 and 12,106.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.45 : 29,898.07 = 12,106.14 : x
2. Step 2: Convert to fraction form
   21,667.45/29,898.07 = 12,106.14/x
3. Step 3: Cross multiply
   21,667.45x = 29,898.07 × 12,106.14
4. Step 4: Simplify right side
   21,667.45x = 361,950,190.88
5. Step 5: Solve for x
   x = 361,950,190.88/21,667.45
6. Step 6: Final answer
   x = 16,704.79