Finding the Fourth Proportional to 5,460.80, 8,185.52 and 3,705.96

Step by Step Solution

1. Step 1: Write the proportion equation
   5,460.80 : 8,185.52 = 3,705.96 : x
2. Step 2: Convert to fraction form
   5,460.80/8,185.52 = 3,705.96/x
3. Step 3: Cross multiply
   5,460.80x = 8,185.52 × 3,705.96
4. Step 4: Simplify right side
   5,460.80x = 30,335,209.70
5. Step 5: Solve for x
   x = 30,335,209.70/5,460.80
6. Step 6: Final answer
   x = 5,555.09