Finding the Fourth Proportional to 28,665.24, 42,992.82 and 7,605.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,665.24 : 42,992.82 = 7,605.48 : x
2. Step 2: Convert to fraction form
   28,665.24/42,992.82 = 7,605.48/x
3. Step 3: Cross multiply
   28,665.24x = 42,992.82 × 7,605.48
4. Step 4: Simplify right side
   28,665.24x = 326,981,032.65
5. Step 5: Solve for x
   x = 326,981,032.65/28,665.24
6. Step 6: Final answer
   x = 11,406.88