Finding the Fourth Proportional to 13,843.98, 20,728.98 and 7,256.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,843.98 : 20,728.98 = 7,256.34 : x
2. Step 2: Convert to fraction form
   13,843.98/20,728.98 = 7,256.34/x
3. Step 3: Cross multiply
   13,843.98x = 20,728.98 × 7,256.34
4. Step 4: Simplify right side
   13,843.98x = 150,416,526.73
5. Step 5: Solve for x
   x = 150,416,526.73/13,843.98
6. Step 6: Final answer
   x = 10,865.12