Finding the Fourth Proportional to 3,411.60, 5,129.55 and 3,338.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,411.60 : 5,129.55 = 3,338.70 : x
2. Step 2: Convert to fraction form
   3,411.60/5,129.55 = 3,338.70/x
3. Step 3: Cross multiply
   3,411.60x = 5,129.55 × 3,338.70
4. Step 4: Simplify right side
   3,411.60x = 17,126,028.59
5. Step 5: Solve for x
   x = 17,126,028.59/3,411.60
6. Step 6: Final answer
   x = 5,019.94