Finding the Fourth Proportional to 7,807.85, 10,771.56 and 5,119.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,807.85 : 10,771.56 = 5,119.71 : x
2. Step 2: Convert to fraction form
   7,807.85/10,771.56 = 5,119.71/x
3. Step 3: Cross multiply
   7,807.85x = 10,771.56 × 5,119.71
4. Step 4: Simplify right side
   7,807.85x = 55,147,263.45
5. Step 5: Solve for x
   x = 55,147,263.45/7,807.85
6. Step 6: Final answer
   x = 7,063.06