Finding the Fourth Proportional to 21,288.15, 31,907.59 and 10,050.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,288.15 : 31,907.59 = 10,050.62 : x
2. Step 2: Convert to fraction form
   21,288.15/31,907.59 = 10,050.62/x
3. Step 3: Cross multiply
   21,288.15x = 31,907.59 × 10,050.62
4. Step 4: Simplify right side
   21,288.15x = 320,690,877.54
5. Step 5: Solve for x
   x = 320,690,877.54/21,288.15
6. Step 6: Final answer
   x = 15,064.29