Finding the Fourth Proportional to 12,392.03, 17,099.87 and 7,355.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,392.03 : 17,099.87 = 7,355.39 : x
2. Step 2: Convert to fraction form
   12,392.03/17,099.87 = 7,355.39/x
3. Step 3: Cross multiply
   12,392.03x = 17,099.87 × 7,355.39
4. Step 4: Simplify right side
   12,392.03x = 125,776,090.52
5. Step 5: Solve for x
   x = 125,776,090.52/12,392.03
6. Step 6: Final answer
   x = 10,149.75