Finding the Fourth Proportional to 11,604.06, 16,020.59 and 10,939.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,604.06 : 16,020.59 = 10,939.86 : x
2. Step 2: Convert to fraction form
   11,604.06/16,020.59 = 10,939.86/x
3. Step 3: Cross multiply
   11,604.06x = 16,020.59 × 10,939.86
4. Step 4: Simplify right side
   11,604.06x = 175,262,957.02
5. Step 5: Solve for x
   x = 175,262,957.02/11,604.06
6. Step 6: Final answer
   x = 15,103.59