Finding the Fourth Proportional to 21,317.27, 31,978.82 and 7,273.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,317.27 : 31,978.82 = 7,273.52 : x
2. Step 2: Convert to fraction form
   21,317.27/31,978.82 = 7,273.52/x
3. Step 3: Cross multiply
   21,317.27x = 31,978.82 × 7,273.52
4. Step 4: Simplify right side
   21,317.27x = 232,598,390.58
5. Step 5: Solve for x
   x = 232,598,390.58/21,317.27
6. Step 6: Final answer
   x = 10,911.27