Finding the Fourth Proportional to 13,381.27, 18,466.18 and 7,412.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,381.27 : 18,466.18 = 7,412.82 : x
2. Step 2: Convert to fraction form
   13,381.27/18,466.18 = 7,412.82/x
3. Step 3: Cross multiply
   13,381.27x = 18,466.18 × 7,412.82
4. Step 4: Simplify right side
   13,381.27x = 136,886,380.65
5. Step 5: Solve for x
   x = 136,886,380.65/13,381.27
6. Step 6: Final answer
   x = 10,229.70