Finding the Fourth Proportional to 12,392, 17,103.12 and 7,424

Step by Step Solution

1. Step 1: Write the proportion equation
   12,392 : 17,103.12 = 7,424 : x
2. Step 2: Convert to fraction form
   12,392/17,103.12 = 7,424/x
3. Step 3: Cross multiply
   12,392x = 17,103.12 × 7,424
4. Step 4: Simplify right side
   12,392x = 126,973,562.88
5. Step 5: Solve for x
   x = 126,973,562.88/12,392
6. Step 6: Final answer
   x = 10,246.41