Finding the Fourth Proportional to 17,103.12, 25,657.38 and 5,415.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,103.12 : 25,657.38 = 5,415.42 : x
2. Step 2: Convert to fraction form
   17,103.12/25,657.38 = 5,415.42/x
3. Step 3: Cross multiply
   17,103.12x = 25,657.38 × 5,415.42
4. Step 4: Simplify right side
   17,103.12x = 138,945,488.80
5. Step 5: Solve for x
   x = 138,945,488.80/17,103.12
6. Step 6: Final answer
   x = 8,123.98