Finding the Fourth Proportional to 16,641.59, 22,959.86 and 10,979.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,641.59 : 22,959.86 = 10,979.15 : x
2. Step 2: Convert to fraction form
   16,641.59/22,959.86 = 10,979.15/x
3. Step 3: Cross multiply
   16,641.59x = 22,959.86 × 10,979.15
4. Step 4: Simplify right side
   16,641.59x = 252,079,577.22
5. Step 5: Solve for x
   x = 252,079,577.22/16,641.59
6. Step 6: Final answer
   x = 15,147.57