Finding the Fourth Proportional to 22,116, 30,520.26 and 12,180

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116 : 30,520.26 = 12,180 : x
2. Step 2: Convert to fraction form
   22,116/30,520.26 = 12,180/x
3. Step 3: Cross multiply
   22,116x = 30,520.26 × 12,180
4. Step 4: Simplify right side
   22,116x = 371,736,766.80
5. Step 5: Solve for x
   x = 371,736,766.80/22,116
6. Step 6: Final answer
   x = 16,808.50