Finding the Fourth Proportional to 11,659.59, 16,092.72 and 7,681.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,659.59 : 16,092.72 = 7,681.05 : x
2. Step 2: Convert to fraction form
   11,659.59/16,092.72 = 7,681.05/x
3. Step 3: Cross multiply
   11,659.59x = 16,092.72 × 7,681.05
4. Step 4: Simplify right side
   11,659.59x = 123,608,986.96
5. Step 5: Solve for x
   x = 123,608,986.96/11,659.59
6. Step 6: Final answer
   x = 10,601.49