Finding the Fourth Proportional to 11,982.10, 17,965.60 and 3,659.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,982.10 : 17,965.60 = 3,659.34 : x
2. Step 2: Convert to fraction form
   11,982.10/17,965.60 = 3,659.34/x
3. Step 3: Cross multiply
   11,982.10x = 17,965.60 × 3,659.34
4. Step 4: Simplify right side
   11,982.10x = 65,742,238.70
5. Step 5: Solve for x
   x = 65,742,238.70/11,982.10
6. Step 6: Final answer
   x = 5,486.70