Finding the Fourth Proportional to 9,351.92, 12,905.69 and 5,103.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,351.92 : 12,905.69 = 5,103.07 : x
2. Step 2: Convert to fraction form
   9,351.92/12,905.69 = 5,103.07/x
3. Step 3: Cross multiply
   9,351.92x = 12,905.69 × 5,103.07
4. Step 4: Simplify right side
   9,351.92x = 65,858,581.69
5. Step 5: Solve for x
   x = 65,858,581.69/9,351.92
6. Step 6: Final answer
   x = 7,042.25