Finding the Fourth Proportional to 19,806.62, 29,710.83 and 8,111.63

Step by Step Solution

1. Step 1: Write the proportion equation
   19,806.62 : 29,710.83 = 8,111.63 : x
2. Step 2: Convert to fraction form
   19,806.62/29,710.83 = 8,111.63/x
3. Step 3: Cross multiply
   19,806.62x = 29,710.83 × 8,111.63
4. Step 4: Simplify right side
   19,806.62x = 241,003,111.40
5. Step 5: Solve for x
   x = 241,003,111.40/19,806.62
6. Step 6: Final answer
   x = 12,167.81