Finding the Fourth Proportional to 5,577.92, 7,695.98 and 3,985.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,577.92 : 7,695.98 = 3,985.05 : x
2. Step 2: Convert to fraction form
   5,577.92/7,695.98 = 3,985.05/x
3. Step 3: Cross multiply
   5,577.92x = 7,695.98 × 3,985.05
4. Step 4: Simplify right side
   5,577.92x = 30,668,888.98
5. Step 5: Solve for x
   x = 30,668,888.98/5,577.92
6. Step 6: Final answer
   x = 5,498.27