Finding the Fourth Proportional to 28,480.86, 42,727.30 and 10,711.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,480.86 : 42,727.30 = 10,711.69 : x
2. Step 2: Convert to fraction form
   28,480.86/42,727.30 = 10,711.69/x
3. Step 3: Cross multiply
   28,480.86x = 42,727.30 × 10,711.69
4. Step 4: Simplify right side
   28,480.86x = 457,681,458.54
5. Step 5: Solve for x
   x = 457,681,458.54/28,480.86
6. Step 6: Final answer
   x = 16,069.79