Finding the Fourth Proportional to 7,200.72, 9,931.72 and 4,548.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.72 : 9,931.72 = 4,548.56 : x
2. Step 2: Convert to fraction form
   7,200.72/9,931.72 = 4,548.56/x
3. Step 3: Cross multiply
   7,200.72x = 9,931.72 × 4,548.56
4. Step 4: Simplify right side
   7,200.72x = 45,175,024.32
5. Step 5: Solve for x
   x = 45,175,024.32/7,200.72
6. Step 6: Final answer
   x = 6,273.68