Finding the Fourth Proportional to 16,908.30, 25,364.16 and 5,815.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,908.30 : 25,364.16 = 5,815.89 : x
2. Step 2: Convert to fraction form
   16,908.30/25,364.16 = 5,815.89/x
3. Step 3: Cross multiply
   16,908.30x = 25,364.16 × 5,815.89
4. Step 4: Simplify right side
   16,908.30x = 147,515,164.50
5. Step 5: Solve for x
   x = 147,515,164.50/16,908.30
6. Step 6: Final answer
   x = 8,724.42