Finding the Fourth Proportional to 9,831.35, 13,567.53 and 5,355.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,831.35 : 13,567.53 = 5,355.17 : x
2. Step 2: Convert to fraction form
   9,831.35/13,567.53 = 5,355.17/x
3. Step 3: Cross multiply
   9,831.35x = 13,567.53 × 5,355.17
4. Step 4: Simplify right side
   9,831.35x = 72,656,429.63
5. Step 5: Solve for x
   x = 72,656,429.63/9,831.35
6. Step 6: Final answer
   x = 7,390.28