Finding the Fourth Proportional to 12,165.58, 16,783.57 and 8,585.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,165.58 : 16,783.57 = 8,585.73 : x
2. Step 2: Convert to fraction form
   12,165.58/16,783.57 = 8,585.73/x
3. Step 3: Cross multiply
   12,165.58x = 16,783.57 × 8,585.73
4. Step 4: Simplify right side
   12,165.58x = 144,099,200.46
5. Step 5: Solve for x
   x = 144,099,200.46/12,165.58
6. Step 6: Final answer
   x = 11,844.83