Finding the Fourth Proportional to 9,362.39, 12,920.72 and 5,384.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.39 : 12,920.72 = 5,384.48 : x
2. Step 2: Convert to fraction form
   9,362.39/12,920.72 = 5,384.48/x
3. Step 3: Cross multiply
   9,362.39x = 12,920.72 × 5,384.48
4. Step 4: Simplify right side
   9,362.39x = 69,571,266.90
5. Step 5: Solve for x
   x = 69,571,266.90/9,362.39
6. Step 6: Final answer
   x = 7,430.93