Finding the Fourth Proportional to 5,388.83, 8,087.17 and 2,758.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388.83 : 8,087.17 = 2,758.53 : x
2. Step 2: Convert to fraction form
   5,388.83/8,087.17 = 2,758.53/x
3. Step 3: Cross multiply
   5,388.83x = 8,087.17 × 2,758.53
4. Step 4: Simplify right side
   5,388.83x = 22,308,742.20
5. Step 5: Solve for x
   x = 22,308,742.20/5,388.83
6. Step 6: Final answer
   x = 4,139.81