Finding the Fourth Proportional to 16,739.34, 23,099.20 and 9,665.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,739.34 : 23,099.20 = 9,665.61 : x
2. Step 2: Convert to fraction form
   16,739.34/23,099.20 = 9,665.61/x
3. Step 3: Cross multiply
   16,739.34x = 23,099.20 × 9,665.61
4. Step 4: Simplify right side
   16,739.34x = 223,267,858.51
5. Step 5: Solve for x
   x = 223,267,858.51/16,739.34
6. Step 6: Final answer
   x = 13,337.91