Finding the Fourth Proportional to 9,455.20, 13,048.50 and 5,422.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,455.20 : 13,048.50 = 5,422.72 : x
2. Step 2: Convert to fraction form
   9,455.20/13,048.50 = 5,422.72/x
3. Step 3: Cross multiply
   9,455.20x = 13,048.50 × 5,422.72
4. Step 4: Simplify right side
   9,455.20x = 70,758,361.92
5. Step 5: Solve for x
   x = 70,758,361.92/9,455.20
6. Step 6: Final answer
   x = 7,483.54