Finding the Fourth Proportional to 12,413.19, 17,128.28 and 7,375.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.19 : 17,128.28 = 7,375.54 : x
2. Step 2: Convert to fraction form
   12,413.19/17,128.28 = 7,375.54/x
3. Step 3: Cross multiply
   12,413.19x = 17,128.28 × 7,375.54
4. Step 4: Simplify right side
   12,413.19x = 126,330,314.27
5. Step 5: Solve for x
   x = 126,330,314.27/12,413.19
6. Step 6: Final answer
   x = 10,177.10