Finding the Fourth Proportional to 9,915.10, 14,871.88 and 3,672.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,915.10 : 14,871.88 = 3,672.19 : x
2. Step 2: Convert to fraction form
   9,915.10/14,871.88 = 3,672.19/x
3. Step 3: Cross multiply
   9,915.10x = 14,871.88 × 3,672.19
4. Step 4: Simplify right side
   9,915.10x = 54,612,369.02
5. Step 5: Solve for x
   x = 54,612,369.02/9,915.10
6. Step 6: Final answer
   x = 5,508.00