Finding the Fourth Proportional to 11,578.55, 15,978.42 and 6,273.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,578.55 : 15,978.42 = 6,273.37 : x
2. Step 2: Convert to fraction form
   11,578.55/15,978.42 = 6,273.37/x
3. Step 3: Cross multiply
   11,578.55x = 15,978.42 × 6,273.37
4. Step 4: Simplify right side
   11,578.55x = 100,238,429.42
5. Step 5: Solve for x
   x = 100,238,429.42/11,578.55
6. Step 6: Final answer
   x = 8,657.25