Finding the Fourth Proportional to 20,103.87, 30,151.71 and 7,619.59

Step by Step Solution

1. Step 1: Write the proportion equation
   20,103.87 : 30,151.71 = 7,619.59 : x
2. Step 2: Convert to fraction form
   20,103.87/30,151.71 = 7,619.59/x
3. Step 3: Cross multiply
   20,103.87x = 30,151.71 × 7,619.59
4. Step 4: Simplify right side
   20,103.87x = 229,743,668.00
5. Step 5: Solve for x
   x = 229,743,668.00/20,103.87
6. Step 6: Final answer
   x = 11,427.83