Finding the Fourth Proportional to 13,817.34, 19,061.82 and 10,821.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,817.34 : 19,061.82 = 10,821.15 : x
2. Step 2: Convert to fraction form
   13,817.34/19,061.82 = 10,821.15/x
3. Step 3: Cross multiply
   13,817.34x = 19,061.82 × 10,821.15
4. Step 4: Simplify right side
   13,817.34x = 206,270,813.49
5. Step 5: Solve for x
   x = 206,270,813.49/13,817.34
6. Step 6: Final answer
   x = 14,928.40