Finding the Fourth Proportional to 6,388.53, 8,816.27 and 3,556.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,388.53 : 8,816.27 = 3,556.06 : x
2. Step 2: Convert to fraction form
   6,388.53/8,816.27 = 3,556.06/x
3. Step 3: Cross multiply
   6,388.53x = 8,816.27 × 3,556.06
4. Step 4: Simplify right side
   6,388.53x = 31,351,185.10
5. Step 5: Solve for x
   x = 31,351,185.10/6,388.53
6. Step 6: Final answer
   x = 4,907.42