Finding the Fourth Proportional to 10,979.04, 16,468.60 and 2,659.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.04 : 16,468.60 = 2,659.05 : x
2. Step 2: Convert to fraction form
   10,979.04/16,468.60 = 2,659.05/x
3. Step 3: Cross multiply
   10,979.04x = 16,468.60 × 2,659.05
4. Step 4: Simplify right side
   10,979.04x = 43,790,782.49
5. Step 5: Solve for x
   x = 43,790,782.49/10,979.04
6. Step 6: Final answer
   x = 3,988.58