Finding the Fourth Proportional to 12,723.75, 17,558.78 and 7,417.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.75 : 17,558.78 = 7,417.54 : x
2. Step 2: Convert to fraction form
   12,723.75/17,558.78 = 7,417.54/x
3. Step 3: Cross multiply
   12,723.75x = 17,558.78 × 7,417.54
4. Step 4: Simplify right side
   12,723.75x = 130,242,937.86
5. Step 5: Solve for x
   x = 130,242,937.86/12,723.75
6. Step 6: Final answer
   x = 10,236.21