Finding the Fourth Proportional to 21,932.52, 30,259 and 12,495.61

Step by Step Solution

1. Step 1: Write the proportion equation
   21,932.52 : 30,259 = 12,495.61 : x
2. Step 2: Convert to fraction form
   21,932.52/30,259 = 12,495.61/x
3. Step 3: Cross multiply
   21,932.52x = 30,259 × 12,495.61
4. Step 4: Simplify right side
   21,932.52x = 378,104,662.99
5. Step 5: Solve for x
   x = 378,104,662.99/21,932.52
6. Step 6: Final answer
   x = 17,239.45