Finding the Fourth Proportional to 7,712.00, 10,640.31 and 5,196.95

Step by Step Solution

1. Step 1: Write the proportion equation
   7,712.00 : 10,640.31 = 5,196.95 : x
2. Step 2: Convert to fraction form
   7,712.00/10,640.31 = 5,196.95/x
3. Step 3: Cross multiply
   7,712.00x = 10,640.31 × 5,196.95
4. Step 4: Simplify right side
   7,712.00x = 55,297,105.85
5. Step 5: Solve for x
   x = 55,297,105.85/7,712.00
6. Step 6: Final answer
   x = 7,170.27