Finding the Fourth Proportional to 7,760.39, 10,711.59 and 5,072.00

Step by Step Solution

1. Step 1: Write the proportion equation
   7,760.39 : 10,711.59 = 5,072.00 : x
2. Step 2: Convert to fraction form
   7,760.39/10,711.59 = 5,072.00/x
3. Step 3: Cross multiply
   7,760.39x = 10,711.59 × 5,072.00
4. Step 4: Simplify right side
   7,760.39x = 54,329,130.92
5. Step 5: Solve for x
   x = 54,329,130.92/7,760.39
6. Step 6: Final answer
   x = 7,000.83