Finding the Fourth Proportional to 6,609.42, 9,915.78 and 4,665.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,609.42 : 9,915.78 = 4,665.42 : x
2. Step 2: Convert to fraction form
   6,609.42/9,915.78 = 4,665.42/x
3. Step 3: Cross multiply
   6,609.42x = 9,915.78 × 4,665.42
4. Step 4: Simplify right side
   6,609.42x = 46,261,278.33
5. Step 5: Solve for x
   x = 46,261,278.33/6,609.42
6. Step 6: Final answer
   x = 6,999.29