Finding the Fourth Proportional to 21,499.25, 32,240.60 and 8,349.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.25 : 32,240.60 = 8,349.89 : x
2. Step 2: Convert to fraction form
   21,499.25/32,240.60 = 8,349.89/x
3. Step 3: Cross multiply
   21,499.25x = 32,240.60 × 8,349.89
4. Step 4: Simplify right side
   21,499.25x = 269,205,421.78
5. Step 5: Solve for x
   x = 269,205,421.78/21,499.25
6. Step 6: Final answer
   x = 12,521.62