Finding the Fourth Proportional to 16,965, 23,411.70 and 9,890.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,965 : 23,411.70 = 9,890.06 : x
2. Step 2: Convert to fraction form
   16,965/23,411.70 = 9,890.06/x
3. Step 3: Cross multiply
   16,965x = 23,411.70 × 9,890.06
4. Step 4: Simplify right side
   16,965x = 231,543,000.64
5. Step 5: Solve for x
   x = 231,543,000.64/16,965
6. Step 6: Final answer
   x = 13,648.28