Finding the Fourth Proportional to 11,035.80, 16,556.31 and 3,640.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,035.80 : 16,556.31 = 3,640.05 : x
2. Step 2: Convert to fraction form
   11,035.80/16,556.31 = 3,640.05/x
3. Step 3: Cross multiply
   11,035.80x = 16,556.31 × 3,640.05
4. Step 4: Simplify right side
   11,035.80x = 60,265,796.22
5. Step 5: Solve for x
   x = 60,265,796.22/11,035.80
6. Step 6: Final answer
   x = 5,460.94