Finding the Fourth Proportional to 11,640.18, 17,456.49 and 5,064.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,640.18 : 17,456.49 = 5,064.42 : x
2. Step 2: Convert to fraction form
   11,640.18/17,456.49 = 5,064.42/x
3. Step 3: Cross multiply
   11,640.18x = 17,456.49 × 5,064.42
4. Step 4: Simplify right side
   11,640.18x = 88,406,997.09
5. Step 5: Solve for x
   x = 88,406,997.09/11,640.18
6. Step 6: Final answer
   x = 7,594.99