Finding the Fourth Proportional to 12,173.31, 18,262.70 and 3,853.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,173.31 : 18,262.70 = 3,853.83 : x
2. Step 2: Convert to fraction form
   12,173.31/18,262.70 = 3,853.83/x
3. Step 3: Cross multiply
   12,173.31x = 18,262.70 × 3,853.83
4. Step 4: Simplify right side
   12,173.31x = 70,381,249.83
5. Step 5: Solve for x
   x = 70,381,249.83/12,173.31
6. Step 6: Final answer
   x = 5,781.60