Finding the Fourth Proportional to 5,404.30, 8,100.56 and 3,556.68

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.30 : 8,100.56 = 3,556.68 : x
2. Step 2: Convert to fraction form
   5,404.30/8,100.56 = 3,556.68/x
3. Step 3: Cross multiply
   5,404.30x = 8,100.56 × 3,556.68
4. Step 4: Simplify right side
   5,404.30x = 28,811,099.74
5. Step 5: Solve for x
   x = 28,811,099.74/5,404.30
6. Step 6: Final answer
   x = 5,331.14