Finding the Fourth Proportional to 12,827.43, 17,703.09 and 7,790.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,827.43 : 17,703.09 = 7,790.49 : x
2. Step 2: Convert to fraction form
   12,827.43/17,703.09 = 7,790.49/x
3. Step 3: Cross multiply
   12,827.43x = 17,703.09 × 7,790.49
4. Step 4: Simplify right side
   12,827.43x = 137,915,745.61
5. Step 5: Solve for x
   x = 137,915,745.61/12,827.43
6. Step 6: Final answer
   x = 10,751.63