Finding the Fourth Proportional to 21,805.50, 30,094.02 and 12,377.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,805.50 : 30,094.02 = 12,377.10 : x
2. Step 2: Convert to fraction form
   21,805.50/30,094.02 = 12,377.10/x
3. Step 3: Cross multiply
   21,805.50x = 30,094.02 × 12,377.10
4. Step 4: Simplify right side
   21,805.50x = 372,476,694.94
5. Step 5: Solve for x
   x = 372,476,694.94/21,805.50
6. Step 6: Final answer
   x = 17,081.78