Finding the Fourth Proportional to 9,915.86, 14,869.71 and 3,676.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.86 : 14,869.71 = 3,676.28 : x
2. Step 2: Convert to fraction form
   9,915.86/14,869.71 = 3,676.28/x
3. Step 3: Cross multiply
   9,915.86x = 14,869.71 × 3,676.28
4. Step 4: Simplify right side
   9,915.86x = 54,665,217.48
5. Step 5: Solve for x
   x = 54,665,217.48/9,915.86
6. Step 6: Final answer
   x = 5,512.91