Finding the Fourth Proportional to 12,392.98, 17,103.17 and 7,015.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,392.98 : 17,103.17 = 7,015.42 : x
2. Step 2: Convert to fraction form
   12,392.98/17,103.17 = 7,015.42/x
3. Step 3: Cross multiply
   12,392.98x = 17,103.17 × 7,015.42
4. Step 4: Simplify right side
   12,392.98x = 119,985,920.88
5. Step 5: Solve for x
   x = 119,985,920.88/12,392.98
6. Step 6: Final answer
   x = 9,681.77