Finding the Fourth Proportional to 9,831.15, 13,566.81 and 5,354.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,831.15 : 13,566.81 = 5,354.88 : x
2. Step 2: Convert to fraction form
   9,831.15/13,566.81 = 5,354.88/x
3. Step 3: Cross multiply
   9,831.15x = 13,566.81 × 5,354.88
4. Step 4: Simplify right side
   9,831.15x = 72,648,639.53
5. Step 5: Solve for x
   x = 72,648,639.53/9,831.15
6. Step 6: Final answer
   x = 7,389.64