Finding the Fourth Proportional to 16,961.61, 23,405.25 and 9,789.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,961.61 : 23,405.25 = 9,789.10 : x
2. Step 2: Convert to fraction form
   16,961.61/23,405.25 = 9,789.10/x
3. Step 3: Cross multiply
   16,961.61x = 23,405.25 × 9,789.10
4. Step 4: Simplify right side
   16,961.61x = 229,116,401.33
5. Step 5: Solve for x
   x = 229,116,401.33/16,961.61
6. Step 6: Final answer
   x = 13,507.94