Finding the Fourth Proportional to 12,618.93, 17,413.50 and 7,315.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,618.93 : 17,413.50 = 7,315.47 : x
2. Step 2: Convert to fraction form
   12,618.93/17,413.50 = 7,315.47/x
3. Step 3: Cross multiply
   12,618.93x = 17,413.50 × 7,315.47
4. Step 4: Simplify right side
   12,618.93x = 127,387,936.85
5. Step 5: Solve for x
   x = 127,387,936.85/12,618.93
6. Step 6: Final answer
   x = 10,094.99