Finding the Fourth Proportional to 6,911.39, 10,351.89 and 5,711.84

Step by Step Solution

1. Step 1: Write the proportion equation
   6,911.39 : 10,351.89 = 5,711.84 : x
2. Step 2: Convert to fraction form
   6,911.39/10,351.89 = 5,711.84/x
3. Step 3: Cross multiply
   6,911.39x = 10,351.89 × 5,711.84
4. Step 4: Simplify right side
   6,911.39x = 59,128,327.78
5. Step 5: Solve for x
   x = 59,128,327.78/6,911.39
6. Step 6: Final answer
   x = 8,555.20