Finding the Fourth Proportional to 9,155.96, 13,725.84 and 3,959

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.96 : 13,725.84 = 3,959 : x
2. Step 2: Convert to fraction form
   9,155.96/13,725.84 = 3,959/x
3. Step 3: Cross multiply
   9,155.96x = 13,725.84 × 3,959
4. Step 4: Simplify right side
   9,155.96x = 54,340,600.56
5. Step 5: Solve for x
   x = 54,340,600.56/9,155.96
6. Step 6: Final answer
   x = 5,935.00