Finding the Fourth Proportional to 16,709.40, 23,051.79 and 9,631.62

Step by Step Solution

1. Step 1: Write the proportion equation
   16,709.40 : 23,051.79 = 9,631.62 : x
2. Step 2: Convert to fraction form
   16,709.40/23,051.79 = 9,631.62/x
3. Step 3: Cross multiply
   16,709.40x = 23,051.79 × 9,631.62
4. Step 4: Simplify right side
   16,709.40x = 222,026,081.60
5. Step 5: Solve for x
   x = 222,026,081.60/16,709.40
6. Step 6: Final answer
   x = 13,287.50