Finding the Fourth Proportional to 9,362.52, 12,918.87 and 5,383.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,362.52 : 12,918.87 = 5,383.80 : x
2. Step 2: Convert to fraction form
   9,362.52/12,918.87 = 5,383.80/x
3. Step 3: Cross multiply
   9,362.52x = 12,918.87 × 5,383.80
4. Step 4: Simplify right side
   9,362.52x = 69,552,612.31
5. Step 5: Solve for x
   x = 69,552,612.31/9,362.52
6. Step 6: Final answer
   x = 7,428.83