Finding the Fourth Proportional to 3,536.78, 5,290.56 and 3,216.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,536.78 : 5,290.56 = 3,216.02 : x
2. Step 2: Convert to fraction form
   3,536.78/5,290.56 = 3,216.02/x
3. Step 3: Cross multiply
   3,536.78x = 5,290.56 × 3,216.02
4. Step 4: Simplify right side
   3,536.78x = 17,014,520.32
5. Step 5: Solve for x
   x = 17,014,520.32/3,536.78
6. Step 6: Final answer
   x = 4,810.74