Finding the Fourth Proportional to 12,185.90, 18,276.55 and 5,939.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.90 : 18,276.55 = 5,939.64 : x
2. Step 2: Convert to fraction form
   12,185.90/18,276.55 = 5,939.64/x
3. Step 3: Cross multiply
   12,185.90x = 18,276.55 × 5,939.64
4. Step 4: Simplify right side
   12,185.90x = 108,556,112.59
5. Step 5: Solve for x
   x = 108,556,112.59/12,185.90
6. Step 6: Final answer
   x = 8,908.34