Finding the Fourth Proportional to 21,783.36, 30,060.54 and 12,092.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,783.36 : 30,060.54 = 12,092.82 : x
2. Step 2: Convert to fraction form
   21,783.36/30,060.54 = 12,092.82/x
3. Step 3: Cross multiply
   21,783.36x = 30,060.54 × 12,092.82
4. Step 4: Simplify right side
   21,783.36x = 363,516,705.15
5. Step 5: Solve for x
   x = 363,516,705.15/21,783.36
6. Step 6: Final answer
   x = 16,687.82