Finding the Fourth Proportional to 21,924.57, 30,248.50 and 12,486.45

Step by Step Solution

1. Step 1: Write the proportion equation
   21,924.57 : 30,248.50 = 12,486.45 : x
2. Step 2: Convert to fraction form
   21,924.57/30,248.50 = 12,486.45/x
3. Step 3: Cross multiply
   21,924.57x = 30,248.50 × 12,486.45
4. Step 4: Simplify right side
   21,924.57x = 377,696,382.83
5. Step 5: Solve for x
   x = 377,696,382.83/21,924.57
6. Step 6: Final answer
   x = 17,227.08