Finding the Fourth Proportional to 22,085.50, 30,478.48 and 12,149.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,085.50 : 30,478.48 = 12,149.50 : x
2. Step 2: Convert to fraction form
   22,085.50/30,478.48 = 12,149.50/x
3. Step 3: Cross multiply
   22,085.50x = 30,478.48 × 12,149.50
4. Step 4: Simplify right side
   22,085.50x = 370,298,292.76
5. Step 5: Solve for x
   x = 370,298,292.76/22,085.50
6. Step 6: Final answer
   x = 16,766.58