Finding the Fourth Proportional to 21,667.92, 32,509.71 and 8,512.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,667.92 : 32,509.71 = 8,512.98 : x
2. Step 2: Convert to fraction form
   21,667.92/32,509.71 = 8,512.98/x
3. Step 3: Cross multiply
   21,667.92x = 32,509.71 × 8,512.98
4. Step 4: Simplify right side
   21,667.92x = 276,754,511.04
5. Step 5: Solve for x
   x = 276,754,511.04/21,667.92
6. Step 6: Final answer
   x = 12,772.55