Finding the Fourth Proportional to 8,442.89, 11,651.59 and 5,086.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,442.89 : 11,651.59 = 5,086.74 : x
2. Step 2: Convert to fraction form
   8,442.89/11,651.59 = 5,086.74/x
3. Step 3: Cross multiply
   8,442.89x = 11,651.59 × 5,086.74
4. Step 4: Simplify right side
   8,442.89x = 59,268,608.92
5. Step 5: Solve for x
   x = 59,268,608.92/8,442.89
6. Step 6: Final answer
   x = 7,019.94