Finding the Fourth Proportional to 16,311.53, 22,510.15 and 9,141.81

Step by Step Solution

1. Step 1: Write the proportion equation
   16,311.53 : 22,510.15 = 9,141.81 : x
2. Step 2: Convert to fraction form
   16,311.53/22,510.15 = 9,141.81/x
3. Step 3: Cross multiply
   16,311.53x = 22,510.15 × 9,141.81
4. Step 4: Simplify right side
   16,311.53x = 205,783,585.15
5. Step 5: Solve for x
   x = 205,783,585.15/16,311.53
6. Step 6: Final answer
   x = 12,615.84