Finding the Fourth Proportional to 16,557.75, 22,858.16 and 12,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,557.75 : 22,858.16 = 12,772.42 : x
2. Step 2: Convert to fraction form
   16,557.75/22,858.16 = 12,772.42/x
3. Step 3: Cross multiply
   16,557.75x = 22,858.16 × 12,772.42
4. Step 4: Simplify right side
   16,557.75x = 291,954,080.45
5. Step 5: Solve for x
   x = 291,954,080.45/16,557.75
6. Step 6: Final answer
   x = 17,632.47