Finding the Fourth Proportional to 3,967.92, 5,475.72 and 2,289.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.92 : 5,475.72 = 2,289.30 : x
2. Step 2: Convert to fraction form
   3,967.92/5,475.72 = 2,289.30/x
3. Step 3: Cross multiply
   3,967.92x = 5,475.72 × 2,289.30
4. Step 4: Simplify right side
   3,967.92x = 12,535,565.80
5. Step 5: Solve for x
   x = 12,535,565.80/3,967.92
6. Step 6: Final answer
   x = 3,159.23