Finding the Fourth Proportional to 16,890.69, 25,336.31 and 5,203.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,890.69 : 25,336.31 = 5,203.88 : x
2. Step 2: Convert to fraction form
   16,890.69/25,336.31 = 5,203.88/x
3. Step 3: Cross multiply
   16,890.69x = 25,336.31 × 5,203.88
4. Step 4: Simplify right side
   16,890.69x = 131,846,964.18
5. Step 5: Solve for x
   x = 131,846,964.18/16,890.69
6. Step 6: Final answer
   x = 7,805.90