Finding the Fourth Proportional to 13,435.42, 18,540.72 and 7,466.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,435.42 : 18,540.72 = 7,466.86 : x
2. Step 2: Convert to fraction form
   13,435.42/18,540.72 = 7,466.86/x
3. Step 3: Cross multiply
   13,435.42x = 18,540.72 × 7,466.86
4. Step 4: Simplify right side
   13,435.42x = 138,440,960.54
5. Step 5: Solve for x
   x = 138,440,960.54/13,435.42
6. Step 6: Final answer
   x = 10,304.18