Finding the Fourth Proportional to 21,443.76, 32,202.18 and 13,960.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.76 : 32,202.18 = 13,960.07 : x
2. Step 2: Convert to fraction form
   21,443.76/32,202.18 = 13,960.07/x
3. Step 3: Cross multiply
   21,443.76x = 32,202.18 × 13,960.07
4. Step 4: Simplify right side
   21,443.76x = 449,544,525.94
5. Step 5: Solve for x
   x = 449,544,525.94/21,443.76
6. Step 6: Final answer
   x = 20,963.89