Finding the Fourth Proportional to 12,550.72, 17,315.76 and 7,833.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,550.72 : 17,315.76 = 7,833.28 : x
2. Step 2: Convert to fraction form
   12,550.72/17,315.76 = 7,833.28/x
3. Step 3: Cross multiply
   12,550.72x = 17,315.76 × 7,833.28
4. Step 4: Simplify right side
   12,550.72x = 135,639,196.49
5. Step 5: Solve for x
   x = 135,639,196.49/12,550.72
6. Step 6: Final answer
   x = 10,807.28