Finding the Fourth Proportional to 12,174.56, 18,261.72 and 3,854.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,174.56 : 18,261.72 = 3,854.55 : x
2. Step 2: Convert to fraction form
   12,174.56/18,261.72 = 3,854.55/x
3. Step 3: Cross multiply
   12,174.56x = 18,261.72 × 3,854.55
4. Step 4: Simplify right side
   12,174.56x = 70,390,712.83
5. Step 5: Solve for x
   x = 70,390,712.83/12,174.56
6. Step 6: Final answer
   x = 5,781.79