Finding the Fourth Proportional to 9,831.38, 13,567.30 and 5,640.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,831.38 : 13,567.30 = 5,640.98 : x
2. Step 2: Convert to fraction form
   9,831.38/13,567.30 = 5,640.98/x
3. Step 3: Cross multiply
   9,831.38x = 13,567.30 × 5,640.98
4. Step 4: Simplify right side
   9,831.38x = 76,532,786.02
5. Step 5: Solve for x
   x = 76,532,786.02/9,831.38
6. Step 6: Final answer
   x = 7,784.55