Finding the Fourth Proportional to 3,503.08, 5,215.73 and 3,454.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,503.08 : 5,215.73 = 3,454.05 : x
2. Step 2: Convert to fraction form
   3,503.08/5,215.73 = 3,454.05/x
3. Step 3: Cross multiply
   3,503.08x = 5,215.73 × 3,454.05
4. Step 4: Simplify right side
   3,503.08x = 18,015,348.86
5. Step 5: Solve for x
   x = 18,015,348.86/3,503.08
6. Step 6: Final answer
   x = 5,142.72