Finding the Fourth Proportional to 19,778.78, 29,684.38 and 8,092.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,778.78 : 29,684.38 = 8,092.10 : x
2. Step 2: Convert to fraction form
   19,778.78/29,684.38 = 8,092.10/x
3. Step 3: Cross multiply
   19,778.78x = 29,684.38 × 8,092.10
4. Step 4: Simplify right side
   19,778.78x = 240,208,971.40
5. Step 5: Solve for x
   x = 240,208,971.40/19,778.78
6. Step 6: Final answer
   x = 12,144.78