Finding the Fourth Proportional to 8,948.91, 13,423.50 and 3,105.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,948.91 : 13,423.50 = 3,105.71 : x
2. Step 2: Convert to fraction form
   8,948.91/13,423.50 = 3,105.71/x
3. Step 3: Cross multiply
   8,948.91x = 13,423.50 × 3,105.71
4. Step 4: Simplify right side
   8,948.91x = 41,689,498.19
5. Step 5: Solve for x
   x = 41,689,498.19/8,948.91
6. Step 6: Final answer
   x = 4,658.61