Finding the Fourth Proportional to 21,997.23, 30,355.86 and 11,925.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,997.23 : 30,355.86 = 11,925.48 : x
2. Step 2: Convert to fraction form
   21,997.23/30,355.86 = 11,925.48/x
3. Step 3: Cross multiply
   21,997.23x = 30,355.86 × 11,925.48
4. Step 4: Simplify right side
   21,997.23x = 362,008,201.31
5. Step 5: Solve for x
   x = 362,008,201.31/21,997.23
6. Step 6: Final answer
   x = 16,456.99