Finding the Fourth Proportional to 22,280.60, 30,740.82 and 12,847.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,280.60 : 30,740.82 = 12,847.34 : x
2. Step 2: Convert to fraction form
   22,280.60/30,740.82 = 12,847.34/x
3. Step 3: Cross multiply
   22,280.60x = 30,740.82 × 12,847.34
4. Step 4: Simplify right side
   22,280.60x = 394,937,766.42
5. Step 5: Solve for x
   x = 394,937,766.42/22,280.60
6. Step 6: Final answer
   x = 17,725.63