Finding the Fourth Proportional to 16,776.80, 23,111.98 and 11,731.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,776.80 : 23,111.98 = 11,731.58 : x
2. Step 2: Convert to fraction form
   16,776.80/23,111.98 = 11,731.58/x
3. Step 3: Cross multiply
   16,776.80x = 23,111.98 × 11,731.58
4. Step 4: Simplify right side
   16,776.80x = 271,140,042.33
5. Step 5: Solve for x
   x = 271,140,042.33/16,776.80
6. Step 6: Final answer
   x = 16,161.61