Finding the Fourth Proportional to 5,427.09, 7,490.52 and 3,189.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,427.09 : 7,490.52 = 3,189.15 : x
2. Step 2: Convert to fraction form
   5,427.09/7,490.52 = 3,189.15/x
3. Step 3: Cross multiply
   5,427.09x = 7,490.52 × 3,189.15
4. Step 4: Simplify right side
   5,427.09x = 23,888,391.86
5. Step 5: Solve for x
   x = 23,888,391.86/5,427.09
6. Step 6: Final answer
   x = 4,401.69