Finding the Fourth Proportional to 43,315.33, 64,982.18 and 13,729.27

Step by Step Solution

1. Step 1: Write the proportion equation
   43,315.33 : 64,982.18 = 13,729.27 : x
2. Step 2: Convert to fraction form
   43,315.33/64,982.18 = 13,729.27/x
3. Step 3: Cross multiply
   43,315.33x = 64,982.18 × 13,729.27
4. Step 4: Simplify right side
   43,315.33x = 892,157,894.41
5. Step 5: Solve for x
   x = 892,157,894.41/43,315.33
6. Step 6: Final answer
   x = 20,596.82