Finding the Fourth Proportional to 19,100.58, 28,639.38 and 8,568.66

Step by Step Solution

1. Step 1: Write the proportion equation
   19,100.58 : 28,639.38 = 8,568.66 : x
2. Step 2: Convert to fraction form
   19,100.58/28,639.38 = 8,568.66/x
3. Step 3: Cross multiply
   19,100.58x = 28,639.38 × 8,568.66
4. Step 4: Simplify right side
   19,100.58x = 245,401,109.83
5. Step 5: Solve for x
   x = 245,401,109.83/19,100.58
6. Step 6: Final answer
   x = 12,847.84