Finding the Fourth Proportional to 22,343.05, 30,824.83 and 12,781

Step by Step Solution

1. Step 1: Write the proportion equation
   22,343.05 : 30,824.83 = 12,781 : x
2. Step 2: Convert to fraction form
   22,343.05/30,824.83 = 12,781/x
3. Step 3: Cross multiply
   22,343.05x = 30,824.83 × 12,781
4. Step 4: Simplify right side
   22,343.05x = 393,972,152.23
5. Step 5: Solve for x
   x = 393,972,152.23/22,343.05
6. Step 6: Final answer
   x = 17,632.87