Finding the Fourth Proportional to 9,424.72, 13,008.45 and 5,448.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,424.72 : 13,008.45 = 5,448.31 : x
2. Step 2: Convert to fraction form
   9,424.72/13,008.45 = 5,448.31/x
3. Step 3: Cross multiply
   9,424.72x = 13,008.45 × 5,448.31
4. Step 4: Simplify right side
   9,424.72x = 70,874,068.22
5. Step 5: Solve for x
   x = 70,874,068.22/9,424.72
6. Step 6: Final answer
   x = 7,520.02