Finding the Fourth Proportional to 21,003.09, 28,985.01 and 12,052.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,003.09 : 28,985.01 = 12,052.41 : x
2. Step 2: Convert to fraction form
   21,003.09/28,985.01 = 12,052.41/x
3. Step 3: Cross multiply
   21,003.09x = 28,985.01 × 12,052.41
4. Step 4: Simplify right side
   21,003.09x = 349,339,224.37
5. Step 5: Solve for x
   x = 349,339,224.37/21,003.09
6. Step 6: Final answer
   x = 16,632.75