Finding the Fourth Proportional to 8,969.86, 13,458.71 and 3,423.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,969.86 : 13,458.71 = 3,423.79 : x
2. Step 2: Convert to fraction form
   8,969.86/13,458.71 = 3,423.79/x
3. Step 3: Cross multiply
   8,969.86x = 13,458.71 × 3,423.79
4. Step 4: Simplify right side
   8,969.86x = 46,079,796.71
5. Step 5: Solve for x
   x = 46,079,796.71/8,969.86
6. Step 6: Final answer
   x = 5,137.18