Finding the Fourth Proportional to 7,308.96, 10,086.34 and 3,951.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,308.96 : 10,086.34 = 3,951.78 : x
2. Step 2: Convert to fraction form
   7,308.96/10,086.34 = 3,951.78/x
3. Step 3: Cross multiply
   7,308.96x = 10,086.34 × 3,951.78
4. Step 4: Simplify right side
   7,308.96x = 39,858,996.69
5. Step 5: Solve for x
   x = 39,858,996.69/7,308.96
6. Step 6: Final answer
   x = 5,453.44