Finding the Fourth Proportional to 7,255.81, 10,796.82 and 7,231.21

Step by Step Solution

1. Step 1: Write the proportion equation
   7,255.81 : 10,796.82 = 7,231.21 : x
2. Step 2: Convert to fraction form
   7,255.81/10,796.82 = 7,231.21/x
3. Step 3: Cross multiply
   7,255.81x = 10,796.82 × 7,231.21
4. Step 4: Simplify right side
   7,255.81x = 78,074,018.64
5. Step 5: Solve for x
   x = 78,074,018.64/7,255.81
6. Step 6: Final answer
   x = 10,760.21