Finding the Fourth Proportional to 12,611.72, 18,917.94 and 3,846.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,611.72 : 18,917.94 = 3,846.64 : x
2. Step 2: Convert to fraction form
   12,611.72/18,917.94 = 3,846.64/x
3. Step 3: Cross multiply
   12,611.72x = 18,917.94 × 3,846.64
4. Step 4: Simplify right side
   12,611.72x = 72,770,504.72
5. Step 5: Solve for x
   x = 72,770,504.72/12,611.72
6. Step 6: Final answer
   x = 5,770.07