Finding the Fourth Proportional to 21,234.69, 31,844.75 and 8,090.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,234.69 : 31,844.75 = 8,090.82 : x
2. Step 2: Convert to fraction form
   21,234.69/31,844.75 = 8,090.82/x
3. Step 3: Cross multiply
   21,234.69x = 31,844.75 × 8,090.82
4. Step 4: Simplify right side
   21,234.69x = 257,650,099.74
5. Step 5: Solve for x
   x = 257,650,099.74/21,234.69
6. Step 6: Final answer
   x = 12,133.45