Finding the Fourth Proportional to 7,808.72, 10,782.60 and 5,577.44

Step by Step Solution

1. Step 1: Write the proportion equation
   7,808.72 : 10,782.60 = 5,577.44 : x
2. Step 2: Convert to fraction form
   7,808.72/10,782.60 = 5,577.44/x
3. Step 3: Cross multiply
   7,808.72x = 10,782.60 × 5,577.44
4. Step 4: Simplify right side
   7,808.72x = 60,139,304.54
5. Step 5: Solve for x
   x = 60,139,304.54/7,808.72
6. Step 6: Final answer
   x = 7,701.56