Finding the Fourth Proportional to 22,309.86, 30,790.17 and 13,357.35

Step by Step Solution

1. Step 1: Write the proportion equation
   22,309.86 : 30,790.17 = 13,357.35 : x
2. Step 2: Convert to fraction form
   22,309.86/30,790.17 = 13,357.35/x
3. Step 3: Cross multiply
   22,309.86x = 30,790.17 × 13,357.35
4. Step 4: Simplify right side
   22,309.86x = 411,275,077.25
5. Step 5: Solve for x
   x = 411,275,077.25/22,309.86
6. Step 6: Final answer
   x = 18,434.68