Finding the Fourth Proportional to 12,666.53, 17,468.46 and 8,185.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,666.53 : 17,468.46 = 8,185.59 : x
2. Step 2: Convert to fraction form
   12,666.53/17,468.46 = 8,185.59/x
3. Step 3: Cross multiply
   12,666.53x = 17,468.46 × 8,185.59
4. Step 4: Simplify right side
   12,666.53x = 142,989,651.49
5. Step 5: Solve for x
   x = 142,989,651.49/12,666.53
6. Step 6: Final answer
   x = 11,288.78