Finding the Fourth Proportional to 12,162.83, 16,784.72 and 6,857.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.83 : 16,784.72 = 6,857.63 : x
2. Step 2: Convert to fraction form
   12,162.83/16,784.72 = 6,857.63/x
3. Step 3: Cross multiply
   12,162.83x = 16,784.72 × 6,857.63
4. Step 4: Simplify right side
   12,162.83x = 115,103,399.41
5. Step 5: Solve for x
   x = 115,103,399.41/12,162.83
6. Step 6: Final answer
   x = 9,463.54