Finding the Fourth Proportional to 11,789.60, 17,679.75 and 4,291.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,789.60 : 17,679.75 = 4,291.37 : x
2. Step 2: Convert to fraction form
   11,789.60/17,679.75 = 4,291.37/x
3. Step 3: Cross multiply
   11,789.60x = 17,679.75 × 4,291.37
4. Step 4: Simplify right side
   11,789.60x = 75,870,348.76
5. Step 5: Solve for x
   x = 75,870,348.76/11,789.60
6. Step 6: Final answer
   x = 6,435.36