Finding the Fourth Proportional to 19,100.30, 28,638.94 and 8,568.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,100.30 : 28,638.94 = 8,568.42 : x
2. Step 2: Convert to fraction form
   19,100.30/28,638.94 = 8,568.42/x
3. Step 3: Cross multiply
   19,100.30x = 28,638.94 × 8,568.42
4. Step 4: Simplify right side
   19,100.30x = 245,390,466.27
5. Step 5: Solve for x
   x = 245,390,466.27/19,100.30
6. Step 6: Final answer
   x = 12,847.47