Finding the Fourth Proportional to 28,067.99, 42,087.90 and 9,341.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,067.99 : 42,087.90 = 9,341.42 : x
2. Step 2: Convert to fraction form
   28,067.99/42,087.90 = 9,341.42/x
3. Step 3: Cross multiply
   28,067.99x = 42,087.90 × 9,341.42
4. Step 4: Simplify right side
   28,067.99x = 393,160,750.82
5. Step 5: Solve for x
   x = 393,160,750.82/28,067.99
6. Step 6: Final answer
   x = 14,007.44