Finding the Fourth Proportional to 9,155.91, 13,730.61 and 3,958.95

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.91 : 13,730.61 = 3,958.95 : x
2. Step 2: Convert to fraction form
   9,155.91/13,730.61 = 3,958.95/x
3. Step 3: Cross multiply
   9,155.91x = 13,730.61 × 3,958.95
4. Step 4: Simplify right side
   9,155.91x = 54,358,798.46
5. Step 5: Solve for x
   x = 54,358,798.46/9,155.91
6. Step 6: Final answer
   x = 5,937.02