Finding the Fourth Proportional to 21,053.07, 31,510.44 and 16,028.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,053.07 : 31,510.44 = 16,028.31 : x
2. Step 2: Convert to fraction form
   21,053.07/31,510.44 = 16,028.31/x
3. Step 3: Cross multiply
   21,053.07x = 31,510.44 × 16,028.31
4. Step 4: Simplify right side
   21,053.07x = 505,059,100.56
5. Step 5: Solve for x
   x = 505,059,100.56/21,053.07
6. Step 6: Final answer
   x = 23,989.81