Finding the Fourth Proportional to 8,091.50, 12,138.59 and 2,827.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.50 : 12,138.59 = 2,827.98 : x
2. Step 2: Convert to fraction form
   8,091.50/12,138.59 = 2,827.98/x
3. Step 3: Cross multiply
   8,091.50x = 12,138.59 × 2,827.98
4. Step 4: Simplify right side
   8,091.50x = 34,327,696.82
5. Step 5: Solve for x
   x = 34,327,696.82/8,091.50
6. Step 6: Final answer
   x = 4,242.44