Finding the Fourth Proportional to 21,259.50, 31,823.61 and 13,848

Step by Step Solution

1. Step 1: Write the proportion equation
   21,259.50 : 31,823.61 = 13,848 : x
2. Step 2: Convert to fraction form
   21,259.50/31,823.61 = 13,848/x
3. Step 3: Cross multiply
   21,259.50x = 31,823.61 × 13,848
4. Step 4: Simplify right side
   21,259.50x = 440,693,351.28
5. Step 5: Solve for x
   x = 440,693,351.28/21,259.50
6. Step 6: Final answer
   x = 20,729.24