Finding the Fourth Proportional to 12,397.83, 17,117.06 and 7,923.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,397.83 : 17,117.06 = 7,923.39 : x
2. Step 2: Convert to fraction form
   12,397.83/17,117.06 = 7,923.39/x
3. Step 3: Cross multiply
   12,397.83x = 17,117.06 × 7,923.39
4. Step 4: Simplify right side
   12,397.83x = 135,625,102.42
5. Step 5: Solve for x
   x = 135,625,102.42/12,397.83
6. Step 6: Final answer
   x = 10,939.42