Finding the Fourth Proportional to 21,667.84, 29,901.32 and 12,107.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.84 : 29,901.32 = 12,107.92 : x
2. Step 2: Convert to fraction form
   21,667.84/29,901.32 = 12,107.92/x
3. Step 3: Cross multiply
   21,667.84x = 29,901.32 × 12,107.92
4. Step 4: Simplify right side
   21,667.84x = 362,042,790.45
5. Step 5: Solve for x
   x = 362,042,790.45/21,667.84
6. Step 6: Final answer
   x = 16,708.76