Finding the Fourth Proportional to 12,608.04, 17,391.86 and 7,825.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,608.04 : 17,391.86 = 7,825.80 : x
2. Step 2: Convert to fraction form
   12,608.04/17,391.86 = 7,825.80/x
3. Step 3: Cross multiply
   12,608.04x = 17,391.86 × 7,825.80
4. Step 4: Simplify right side
   12,608.04x = 136,105,178.86
5. Step 5: Solve for x
   x = 136,105,178.86/12,608.04
6. Step 6: Final answer
   x = 10,795.11