Finding the Fourth Proportional to 5,499.35, 8,229.56 and 3,420.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,499.35 : 8,229.56 = 3,420.34 : x
2. Step 2: Convert to fraction form
   5,499.35/8,229.56 = 3,420.34/x
3. Step 3: Cross multiply
   5,499.35x = 8,229.56 × 3,420.34
4. Step 4: Simplify right side
   5,499.35x = 28,147,893.25
5. Step 5: Solve for x
   x = 28,147,893.25/5,499.35
6. Step 6: Final answer
   x = 5,118.40