Finding the Fourth Proportional to 21,992.50, 32,962.31 and 10,129.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,992.50 : 32,962.31 = 10,129.96 : x
2. Step 2: Convert to fraction form
   21,992.50/32,962.31 = 10,129.96/x
3. Step 3: Cross multiply
   21,992.50x = 32,962.31 × 10,129.96
4. Step 4: Simplify right side
   21,992.50x = 333,907,003.05
5. Step 5: Solve for x
   x = 333,907,003.05/21,992.50
6. Step 6: Final answer
   x = 15,182.76