Finding the Fourth Proportional to 12,399.42, 17,103.65 and 7,360.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.42 : 17,103.65 = 7,360.23 : x
2. Step 2: Convert to fraction form
   12,399.42/17,103.65 = 7,360.23/x
3. Step 3: Cross multiply
   12,399.42x = 17,103.65 × 7,360.23
4. Step 4: Simplify right side
   12,399.42x = 125,886,761.04
5. Step 5: Solve for x
   x = 125,886,761.04/12,399.42
6. Step 6: Final answer
   x = 10,152.63