Finding the Fourth Proportional to 22,361.47, 30,856.82 and 12,289.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,361.47 : 30,856.82 = 12,289.80 : x
2. Step 2: Convert to fraction form
   22,361.47/30,856.82 = 12,289.80/x
3. Step 3: Cross multiply
   22,361.47x = 30,856.82 × 12,289.80
4. Step 4: Simplify right side
   22,361.47x = 379,224,146.44
5. Step 5: Solve for x
   x = 379,224,146.44/22,361.47
6. Step 6: Final answer
   x = 16,958.82