Finding the Fourth Proportional to 22,108.50, 30,509.76 and 12,172.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,108.50 : 30,509.76 = 12,172.50 : x
2. Step 2: Convert to fraction form
   22,108.50/30,509.76 = 12,172.50/x
3. Step 3: Cross multiply
   22,108.50x = 30,509.76 × 12,172.50
4. Step 4: Simplify right side
   22,108.50x = 371,380,053.60
5. Step 5: Solve for x
   x = 371,380,053.60/22,108.50
6. Step 6: Final answer
   x = 16,798.07