Finding the Fourth Proportional to 3,477.60, 5,228.55 and 3,404.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,477.60 : 5,228.55 = 3,404.70 : x
2. Step 2: Convert to fraction form
   3,477.60/5,228.55 = 3,404.70/x
3. Step 3: Cross multiply
   3,477.60x = 5,228.55 × 3,404.70
4. Step 4: Simplify right side
   3,477.60x = 17,801,644.19
5. Step 5: Solve for x
   x = 17,801,644.19/3,477.60
6. Step 6: Final answer
   x = 5,118.95