Finding the Fourth Proportional to 16,557.50, 22,857.82 and 12,772.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,557.50 : 22,857.82 = 12,772.17 : x
2. Step 2: Convert to fraction form
   16,557.50/22,857.82 = 12,772.17/x
3. Step 3: Cross multiply
   16,557.50x = 22,857.82 × 12,772.17
4. Step 4: Simplify right side
   16,557.50x = 291,943,784.72
5. Step 5: Solve for x
   x = 291,943,784.72/16,557.50
6. Step 6: Final answer
   x = 17,632.12