Finding the Fourth Proportional to 16,843.86, 23,244.71 and 9,290.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,843.86 : 23,244.71 = 9,290.21 : x
2. Step 2: Convert to fraction form
   16,843.86/23,244.71 = 9,290.21/x
3. Step 3: Cross multiply
   16,843.86x = 23,244.71 × 9,290.21
4. Step 4: Simplify right side
   16,843.86x = 215,948,237.29
5. Step 5: Solve for x
   x = 215,948,237.29/16,843.86
6. Step 6: Final answer
   x = 12,820.59