Finding the Fourth Proportional to 12,942.61, 19,413.94 and 3,582.66

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.61 : 19,413.94 = 3,582.66 : x
2. Step 2: Convert to fraction form
   12,942.61/19,413.94 = 3,582.66/x
3. Step 3: Cross multiply
   12,942.61x = 19,413.94 × 3,582.66
4. Step 4: Simplify right side
   12,942.61x = 69,553,453.69
5. Step 5: Solve for x
   x = 69,553,453.69/12,942.61
6. Step 6: Final answer
   x = 5,373.99