Finding the Fourth Proportional to 5,917.32, 8,158.86 and 3,923.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,917.32 : 8,158.86 = 3,923.64 : x
2. Step 2: Convert to fraction form
   5,917.32/8,158.86 = 3,923.64/x
3. Step 3: Cross multiply
   5,917.32x = 8,158.86 × 3,923.64
4. Step 4: Simplify right side
   5,917.32x = 32,012,429.45
5. Step 5: Solve for x
   x = 32,012,429.45/5,917.32
6. Step 6: Final answer
   x = 5,409.95