Finding the Fourth Proportional to 12,920.52, 17,831.97 and 7,883.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,920.52 : 17,831.97 = 7,883.68 : x
2. Step 2: Convert to fraction form
   12,920.52/17,831.97 = 7,883.68/x
3. Step 3: Cross multiply
   12,920.52x = 17,831.97 × 7,883.68
4. Step 4: Simplify right side
   12,920.52x = 140,581,530.23
5. Step 5: Solve for x
   x = 140,581,530.23/12,920.52
6. Step 6: Final answer
   x = 10,880.48