Finding the Fourth Proportional to 9,403.48, 12,976.68 and 5,424.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,403.48 : 12,976.68 = 5,424.32 : x
2. Step 2: Convert to fraction form
   9,403.48/12,976.68 = 5,424.32/x
3. Step 3: Cross multiply
   9,403.48x = 12,976.68 × 5,424.32
4. Step 4: Simplify right side
   9,403.48x = 70,389,664.86
5. Step 5: Solve for x
   x = 70,389,664.86/9,403.48
6. Step 6: Final answer
   x = 7,485.49