Finding the Fourth Proportional to 10,390.92, 14,339.52 and 5,675.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.92 : 14,339.52 = 5,675.28 : x
2. Step 2: Convert to fraction form
   10,390.92/14,339.52 = 5,675.28/x
3. Step 3: Cross multiply
   10,390.92x = 14,339.52 × 5,675.28
4. Step 4: Simplify right side
   10,390.92x = 81,380,791.07
5. Step 5: Solve for x
   x = 81,380,791.07/10,390.92
6. Step 6: Final answer
   x = 7,831.91