Finding the Fourth Proportional to 5,490.29, 7,574.69 and 3,811.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,490.29 : 7,574.69 = 3,811.25 : x
2. Step 2: Convert to fraction form
   5,490.29/7,574.69 = 3,811.25/x
3. Step 3: Cross multiply
   5,490.29x = 7,574.69 × 3,811.25
4. Step 4: Simplify right side
   5,490.29x = 28,869,018.21
5. Step 5: Solve for x
   x = 28,869,018.21/5,490.29
6. Step 6: Final answer
   x = 5,258.20