Finding the Fourth Proportional to 5,086.86, 7,019.91 and 2,849.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,086.86 : 7,019.91 = 2,849.10 : x
2. Step 2: Convert to fraction form
   5,086.86/7,019.91 = 2,849.10/x
3. Step 3: Cross multiply
   5,086.86x = 7,019.91 × 2,849.10
4. Step 4: Simplify right side
   5,086.86x = 20,000,425.58
5. Step 5: Solve for x
   x = 20,000,425.58/5,086.86
6. Step 6: Final answer
   x = 3,931.78