Finding the Fourth Proportional to 11,323.09, 16,981.60 and 3,423.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,323.09 : 16,981.60 = 3,423.57 : x
2. Step 2: Convert to fraction form
   11,323.09/16,981.60 = 3,423.57/x
3. Step 3: Cross multiply
   11,323.09x = 16,981.60 × 3,423.57
4. Step 4: Simplify right side
   11,323.09x = 58,137,696.31
5. Step 5: Solve for x
   x = 58,137,696.31/11,323.09
6. Step 6: Final answer
   x = 5,134.44