Finding the Fourth Proportional to 12,723.54, 17,558.01 and 7,134.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.54 : 17,558.01 = 7,134.18 : x
2. Step 2: Convert to fraction form
   12,723.54/17,558.01 = 7,134.18/x
3. Step 3: Cross multiply
   12,723.54x = 17,558.01 × 7,134.18
4. Step 4: Simplify right side
   12,723.54x = 125,262,003.78
5. Step 5: Solve for x
   x = 125,262,003.78/12,723.54
6. Step 6: Final answer
   x = 9,844.90