Finding the Fourth Proportional to 9,728.33, 13,424.91 and 5,479.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,728.33 : 13,424.91 = 5,479.37 : x
2. Step 2: Convert to fraction form
   9,728.33/13,424.91 = 5,479.37/x
3. Step 3: Cross multiply
   9,728.33x = 13,424.91 × 5,479.37
4. Step 4: Simplify right side
   9,728.33x = 73,559,981.98
5. Step 5: Solve for x
   x = 73,559,981.98/9,728.33
6. Step 6: Final answer
   x = 7,561.42