Finding the Fourth Proportional to 22,290.23, 30,760.83 and 13,338.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,290.23 : 30,760.83 = 13,338.11 : x
2. Step 2: Convert to fraction form
   22,290.23/30,760.83 = 13,338.11/x
3. Step 3: Cross multiply
   22,290.23x = 30,760.83 × 13,338.11
4. Step 4: Simplify right side
   22,290.23x = 410,291,180.43
5. Step 5: Solve for x
   x = 410,291,180.43/22,290.23
6. Step 6: Final answer
   x = 18,406.78