Finding the Fourth Proportional to 11,809.98, 16,304.55 and 7,836.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,809.98 : 16,304.55 = 7,836.48 : x
2. Step 2: Convert to fraction form
   11,809.98/16,304.55 = 7,836.48/x
3. Step 3: Cross multiply
   11,809.98x = 16,304.55 × 7,836.48
4. Step 4: Simplify right side
   11,809.98x = 127,770,279.98
5. Step 5: Solve for x
   x = 127,770,279.98/11,809.98
6. Step 6: Final answer
   x = 10,818.84