Finding the Fourth Proportional to 11,601.79, 16,009.59 and 6,821.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,601.79 : 16,009.59 = 6,821.94 : x
2. Step 2: Convert to fraction form
   11,601.79/16,009.59 = 6,821.94/x
3. Step 3: Cross multiply
   11,601.79x = 16,009.59 × 6,821.94
4. Step 4: Simplify right side
   11,601.79x = 109,216,462.40
5. Step 5: Solve for x
   x = 109,216,462.40/11,601.79
6. Step 6: Final answer
   x = 9,413.76