Finding the Fourth Proportional to 7,771.02, 10,711.89 and 5,778.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,771.02 : 10,711.89 = 5,778.42 : x
2. Step 2: Convert to fraction form
   7,771.02/10,711.89 = 5,778.42/x
3. Step 3: Cross multiply
   7,771.02x = 10,711.89 × 5,778.42
4. Step 4: Simplify right side
   7,771.02x = 61,897,799.41
5. Step 5: Solve for x
   x = 61,897,799.41/7,771.02
6. Step 6: Final answer
   x = 7,965.21