Finding the Fourth Proportional to 23,938.07, 33,020.01 and 14,978.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,938.07 : 33,020.01 = 14,978.21 : x
2. Step 2: Convert to fraction form
   23,938.07/33,020.01 = 14,978.21/x
3. Step 3: Cross multiply
   23,938.07x = 33,020.01 × 14,978.21
4. Step 4: Simplify right side
   23,938.07x = 494,580,478.88
5. Step 5: Solve for x
   x = 494,580,478.88/23,938.07
6. Step 6: Final answer
   x = 20,660.84