Finding the Fourth Proportional to 16,801.17, 25,205.58 and 5,115.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,801.17 : 25,205.58 = 5,115.30 : x
2. Step 2: Convert to fraction form
   16,801.17/25,205.58 = 5,115.30/x
3. Step 3: Cross multiply
   16,801.17x = 25,205.58 × 5,115.30
4. Step 4: Simplify right side
   16,801.17x = 128,934,103.37
5. Step 5: Solve for x
   x = 128,934,103.37/16,801.17
6. Step 6: Final answer
   x = 7,674.11