Finding the Fourth Proportional to 5,422.30, 7,482.72 and 3,183.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,422.30 : 7,482.72 = 3,183.78 : x
2. Step 2: Convert to fraction form
   5,422.30/7,482.72 = 3,183.78/x
3. Step 3: Cross multiply
   5,422.30x = 7,482.72 × 3,183.78
4. Step 4: Simplify right side
   5,422.30x = 23,823,334.28
5. Step 5: Solve for x
   x = 23,823,334.28/5,422.30
6. Step 6: Final answer
   x = 4,393.58