Finding the Fourth Proportional to 22,321.79, 30,800.81 and 13,367.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,321.79 : 30,800.81 = 13,367.40 : x
2. Step 2: Convert to fraction form
   22,321.79/30,800.81 = 13,367.40/x
3. Step 3: Cross multiply
   22,321.79x = 30,800.81 × 13,367.40
4. Step 4: Simplify right side
   22,321.79x = 411,726,665.51
5. Step 5: Solve for x
   x = 411,726,665.51/22,321.79
6. Step 6: Final answer
   x = 18,445.06