Finding the Fourth Proportional to 21,352.28, 32,011.83 and 13,839.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,352.28 : 32,011.83 = 13,839.98 : x
2. Step 2: Convert to fraction form
   21,352.28/32,011.83 = 13,839.98/x
3. Step 3: Cross multiply
   21,352.28x = 32,011.83 × 13,839.98
4. Step 4: Simplify right side
   21,352.28x = 443,042,926.90
5. Step 5: Solve for x
   x = 443,042,926.90/21,352.28
6. Step 6: Final answer
   x = 20,749.21