Finding the Fourth Proportional to 10,622.71, 15,909.82 and 5,079.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,622.71 : 15,909.82 = 5,079.97 : x
2. Step 2: Convert to fraction form
   10,622.71/15,909.82 = 5,079.97/x
3. Step 3: Cross multiply
   10,622.71x = 15,909.82 × 5,079.97
4. Step 4: Simplify right side
   10,622.71x = 80,821,326.00
5. Step 5: Solve for x
   x = 80,821,326.00/10,622.71
6. Step 6: Final answer
   x = 7,608.35