Finding the Fourth Proportional to 21,379.89, 32,076.76 and 10,285.14

Step by Step Solution

1. Step 1: Write the proportion equation
   21,379.89 : 32,076.76 = 10,285.14 : x
2. Step 2: Convert to fraction form
   21,379.89/32,076.76 = 10,285.14/x
3. Step 3: Cross multiply
   21,379.89x = 32,076.76 × 10,285.14
4. Step 4: Simplify right side
   21,379.89x = 329,913,967.35
5. Step 5: Solve for x
   x = 329,913,967.35/21,379.89
6. Step 6: Final answer
   x = 15,431.04