Finding the Fourth Proportional to 5,480.92, 8,169.31 and 5,169.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,480.92 : 8,169.31 = 5,169.58 : x
2. Step 2: Convert to fraction form
   5,480.92/8,169.31 = 5,169.58/x
3. Step 3: Cross multiply
   5,480.92x = 8,169.31 × 5,169.58
4. Step 4: Simplify right side
   5,480.92x = 42,231,901.59
5. Step 5: Solve for x
   x = 42,231,901.59/5,480.92
6. Step 6: Final answer
   x = 7,705.26