Finding the Fourth Proportional to 9,420.72, 13,002.92 and 5,444.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420.72 : 13,002.92 = 5,444.16 : x
2. Step 2: Convert to fraction form
   9,420.72/13,002.92 = 5,444.16/x
3. Step 3: Cross multiply
   9,420.72x = 13,002.92 × 5,444.16
4. Step 4: Simplify right side
   9,420.72x = 70,789,949.73
5. Step 5: Solve for x
   x = 70,789,949.73/9,420.72
6. Step 6: Final answer
   x = 7,514.28