Finding the Fourth Proportional to 21,910.04, 30,234.18 and 12,476.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,910.04 : 30,234.18 = 12,476.72 : x
2. Step 2: Convert to fraction form
   21,910.04/30,234.18 = 12,476.72/x
3. Step 3: Cross multiply
   21,910.04x = 30,234.18 × 12,476.72
4. Step 4: Simplify right side
   21,910.04x = 377,223,398.29
5. Step 5: Solve for x
   x = 377,223,398.29/21,910.04
6. Step 6: Final answer
   x = 17,216.92