Finding the Fourth Proportional to 16,971.16, 23,419.82 and 9,417.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,971.16 : 23,419.82 = 9,417.32 : x
2. Step 2: Convert to fraction form
   16,971.16/23,419.82 = 9,417.32/x
3. Step 3: Cross multiply
   16,971.16x = 23,419.82 × 9,417.32
4. Step 4: Simplify right side
   16,971.16x = 220,551,939.28
5. Step 5: Solve for x
   x = 220,551,939.28/16,971.16
6. Step 6: Final answer
   x = 12,995.69