Finding the Fourth Proportional to 11,861.37, 17,786.01 and 3,961.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,861.37 : 17,786.01 = 3,961.04 : x
2. Step 2: Convert to fraction form
   11,861.37/17,786.01 = 3,961.04/x
3. Step 3: Cross multiply
   11,861.37x = 17,786.01 × 3,961.04
4. Step 4: Simplify right side
   11,861.37x = 70,451,141.52
5. Step 5: Solve for x
   x = 70,451,141.52/11,861.37
6. Step 6: Final answer
   x = 5,939.55