Finding the Fourth Proportional to 12,364.18, 18,540.51 and 7,171.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,364.18 : 18,540.51 = 7,171.54 : x
2. Step 2: Convert to fraction form
   12,364.18/18,540.51 = 7,171.54/x
3. Step 3: Cross multiply
   12,364.18x = 18,540.51 × 7,171.54
4. Step 4: Simplify right side
   12,364.18x = 132,964,009.09
5. Step 5: Solve for x
   x = 132,964,009.09/12,364.18
6. Step 6: Final answer
   x = 10,753.97