Finding the Fourth Proportional to 16,611.15, 22,923.90 and 9,057.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,611.15 : 22,923.90 = 9,057.72 : x
2. Step 2: Convert to fraction form
   16,611.15/22,923.90 = 9,057.72/x
3. Step 3: Cross multiply
   16,611.15x = 22,923.90 × 9,057.72
4. Step 4: Simplify right side
   16,611.15x = 207,638,267.51
5. Step 5: Solve for x
   x = 207,638,267.51/16,611.15
6. Step 6: Final answer
   x = 12,499.93