Finding the Fourth Proportional to 16,210.71, 22,372.56 and 9,406.23

Step by Step Solution

1. Step 1: Write the proportion equation
   16,210.71 : 22,372.56 = 9,406.23 : x
2. Step 2: Convert to fraction form
   16,210.71/22,372.56 = 9,406.23/x
3. Step 3: Cross multiply
   16,210.71x = 22,372.56 × 9,406.23
4. Step 4: Simplify right side
   16,210.71x = 210,441,445.05
5. Step 5: Solve for x
   x = 210,441,445.05/16,210.71
6. Step 6: Final answer
   x = 12,981.63