Finding the Fourth Proportional to 3,553.48, 5,335.98 and 3,403.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,553.48 : 5,335.98 = 3,403.72 : x
2. Step 2: Convert to fraction form
   3,553.48/5,335.98 = 3,403.72/x
3. Step 3: Cross multiply
   3,553.48x = 5,335.98 × 3,403.72
4. Step 4: Simplify right side
   3,553.48x = 18,162,181.85
5. Step 5: Solve for x
   x = 18,162,181.85/3,553.48
6. Step 6: Final answer
   x = 5,111.10