Finding the Fourth Proportional to 12,091.98, 18,131.51 and 4,192.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,091.98 : 18,131.51 = 4,192.47 : x
2. Step 2: Convert to fraction form
   12,091.98/18,131.51 = 4,192.47/x
3. Step 3: Cross multiply
   12,091.98x = 18,131.51 × 4,192.47
4. Step 4: Simplify right side
   12,091.98x = 76,015,790.77
5. Step 5: Solve for x
   x = 76,015,790.77/12,091.98
6. Step 6: Final answer
   x = 6,286.46