Finding the Fourth Proportional to 13,823.98, 20,744.57 and 5,615.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,823.98 : 20,744.57 = 5,615.98 : x
2. Step 2: Convert to fraction form
   13,823.98/20,744.57 = 5,615.98/x
3. Step 3: Cross multiply
   13,823.98x = 20,744.57 × 5,615.98
4. Step 4: Simplify right side
   13,823.98x = 116,501,090.23
5. Step 5: Solve for x
   x = 116,501,090.23/13,823.98
6. Step 6: Final answer
   x = 8,427.46