Finding the Fourth Proportional to 22,007.39, 30,365.52 and 13,057.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,007.39 : 30,365.52 = 13,057.80 : x
2. Step 2: Convert to fraction form
   22,007.39/30,365.52 = 13,057.80/x
3. Step 3: Cross multiply
   22,007.39x = 30,365.52 × 13,057.80
4. Step 4: Simplify right side
   22,007.39x = 396,506,864.71
5. Step 5: Solve for x
   x = 396,506,864.71/22,007.39
6. Step 6: Final answer
   x = 18,016.99