Finding the Fourth Proportional to 19,131.48, 28,700.18 and 9,766.42

Step by Step Solution

1. Step 1: Write the proportion equation
   19,131.48 : 28,700.18 = 9,766.42 : x
2. Step 2: Convert to fraction form
   19,131.48/28,700.18 = 9,766.42/x
3. Step 3: Cross multiply
   19,131.48x = 28,700.18 × 9,766.42
4. Step 4: Simplify right side
   19,131.48x = 280,297,928.00
5. Step 5: Solve for x
   x = 280,297,928.00/19,131.48
6. Step 6: Final answer
   x = 14,651.14