Finding the Fourth Proportional to 21,976.84, 30,330.21 and 12,546.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,976.84 : 30,330.21 = 12,546.82 : x
2. Step 2: Convert to fraction form
   21,976.84/30,330.21 = 12,546.82/x
3. Step 3: Cross multiply
   21,976.84x = 30,330.21 × 12,546.82
4. Step 4: Simplify right side
   21,976.84x = 380,547,685.43
5. Step 5: Solve for x
   x = 380,547,685.43/21,976.84
6. Step 6: Final answer
   x = 17,315.85