Finding the Fourth Proportional to 16,819.26, 25,231.59 and 5,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,819.26 : 25,231.59 = 5,131.50 : x
2. Step 2: Convert to fraction form
   16,819.26/25,231.59 = 5,131.50/x
3. Step 3: Cross multiply
   16,819.26x = 25,231.59 × 5,131.50
4. Step 4: Simplify right side
   16,819.26x = 129,475,904.09
5. Step 5: Solve for x
   x = 129,475,904.09/16,819.26
6. Step 6: Final answer
   x = 7,698.07