Finding the Fourth Proportional to 16,828.78, 25,225.35 and 5,725.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,828.78 : 25,225.35 = 5,725.30 : x
2. Step 2: Convert to fraction form
   16,828.78/25,225.35 = 5,725.30/x
3. Step 3: Cross multiply
   16,828.78x = 25,225.35 × 5,725.30
4. Step 4: Simplify right side
   16,828.78x = 144,422,696.36
5. Step 5: Solve for x
   x = 144,422,696.36/16,828.78
6. Step 6: Final answer
   x = 8,581.89