Finding the Fourth Proportional to 21,496.78, 32,242.88 and 13,162.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,496.78 : 32,242.88 = 13,162.28 : x
2. Step 2: Convert to fraction form
   21,496.78/32,242.88 = 13,162.28/x
3. Step 3: Cross multiply
   21,496.78x = 32,242.88 × 13,162.28
4. Step 4: Simplify right side
   21,496.78x = 424,389,814.57
5. Step 5: Solve for x
   x = 424,389,814.57/21,496.78
6. Step 6: Final answer
   x = 19,742.02