Finding the Fourth Proportional to 21,871.89, 30,175.31 and 14,322.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,871.89 : 30,175.31 = 14,322.53 : x
2. Step 2: Convert to fraction form
   21,871.89/30,175.31 = 14,322.53/x
3. Step 3: Cross multiply
   21,871.89x = 30,175.31 × 14,322.53
4. Step 4: Simplify right side
   21,871.89x = 432,186,667.66
5. Step 5: Solve for x
   x = 432,186,667.66/21,871.89
6. Step 6: Final answer
   x = 19,759.91