Finding the Fourth Proportional to 12,739.55, 17,579.42 and 7,433.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,739.55 : 17,579.42 = 7,433.34 : x
2. Step 2: Convert to fraction form
   12,739.55/17,579.42 = 7,433.34/x
3. Step 3: Cross multiply
   12,739.55x = 17,579.42 × 7,433.34
4. Step 4: Simplify right side
   12,739.55x = 130,673,768.70
5. Step 5: Solve for x
   x = 130,673,768.70/12,739.55
6. Step 6: Final answer
   x = 10,257.33