Finding the Fourth Proportional to 21,269.72, 31,892.58 and 10,179.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,269.72 : 31,892.58 = 10,179.08 : x
2. Step 2: Convert to fraction form
   21,269.72/31,892.58 = 10,179.08/x
3. Step 3: Cross multiply
   21,269.72x = 31,892.58 × 10,179.08
4. Step 4: Simplify right side
   21,269.72x = 324,637,123.23
5. Step 5: Solve for x
   x = 324,637,123.23/21,269.72
6. Step 6: Final answer
   x = 15,262.88