Finding the Fourth Proportional to 9,915.66, 14,868.88 and 3,675.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.66 : 14,868.88 = 3,675.42 : x
2. Step 2: Convert to fraction form
   9,915.66/14,868.88 = 3,675.42/x
3. Step 3: Cross multiply
   9,915.66x = 14,868.88 × 3,675.42
4. Step 4: Simplify right side
   9,915.66x = 54,649,360.55
5. Step 5: Solve for x
   x = 54,649,360.55/9,915.66
6. Step 6: Final answer
   x = 5,511.42