Finding the Fourth Proportional to 16,659.59, 22,990.23 and 9,207.59

Step by Step Solution

1. Step 1: Write the proportion equation
   16,659.59 : 22,990.23 = 9,207.59 : x
2. Step 2: Convert to fraction form
   16,659.59/22,990.23 = 9,207.59/x
3. Step 3: Cross multiply
   16,659.59x = 22,990.23 × 9,207.59
4. Step 4: Simplify right side
   16,659.59x = 211,684,496.89
5. Step 5: Solve for x
   x = 211,684,496.89/16,659.59
6. Step 6: Final answer
   x = 12,706.47