Finding the Fourth Proportional to 8,955.91, 13,434 and 3,112.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,955.91 : 13,434 = 3,112.72 : x
2. Step 2: Convert to fraction form
   8,955.91/13,434 = 3,112.72/x
3. Step 3: Cross multiply
   8,955.91x = 13,434 × 3,112.72
4. Step 4: Simplify right side
   8,955.91x = 41,816,280.48
5. Step 5: Solve for x
   x = 41,816,280.48/8,955.91
6. Step 6: Final answer
   x = 4,669.13