Finding the Fourth Proportional to 11,979.98, 16,526.77 and 7,729.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,979.98 : 16,526.77 = 7,729.94 : x
2. Step 2: Convert to fraction form
   11,979.98/16,526.77 = 7,729.94/x
3. Step 3: Cross multiply
   11,979.98x = 16,526.77 × 7,729.94
4. Step 4: Simplify right side
   11,979.98x = 127,750,940.49
5. Step 5: Solve for x
   x = 127,750,940.49/11,979.98
6. Step 6: Final answer
   x = 10,663.70