Finding the Fourth Proportional to 16,238.02, 22,406.06 and 9,861.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,238.02 : 22,406.06 = 9,861.28 : x
2. Step 2: Convert to fraction form
   16,238.02/22,406.06 = 9,861.28/x
3. Step 3: Cross multiply
   16,238.02x = 22,406.06 × 9,861.28
4. Step 4: Simplify right side
   16,238.02x = 220,952,431.36
5. Step 5: Solve for x
   x = 220,952,431.36/16,238.02
6. Step 6: Final answer
   x = 13,607.10