Finding the Fourth Proportional to 12,393.12, 17,098.33 and 7,919.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,393.12 : 17,098.33 = 7,919.49 : x
2. Step 2: Convert to fraction form
   12,393.12/17,098.33 = 7,919.49/x
3. Step 3: Cross multiply
   12,393.12x = 17,098.33 × 7,919.49
4. Step 4: Simplify right side
   12,393.12x = 135,410,053.45
5. Step 5: Solve for x
   x = 135,410,053.45/12,393.12
6. Step 6: Final answer
   x = 10,926.23