Finding the Fourth Proportional to 9,198.72, 12,697.92 and 5,472

Step by Step Solution

1. Step 1: Write the proportion equation
   9,198.72 : 12,697.92 = 5,472 : x
2. Step 2: Convert to fraction form
   9,198.72/12,697.92 = 5,472/x
3. Step 3: Cross multiply
   9,198.72x = 12,697.92 × 5,472
4. Step 4: Simplify right side
   9,198.72x = 69,483,018.24
5. Step 5: Solve for x
   x = 69,483,018.24/9,198.72
6. Step 6: Final answer
   x = 7,553.55