Finding the Fourth Proportional to 8,040.42, 12,061.80 and 2,845.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,040.42 : 12,061.80 = 2,845.86 : x
2. Step 2: Convert to fraction form
   8,040.42/12,061.80 = 2,845.86/x
3. Step 3: Cross multiply
   8,040.42x = 12,061.80 × 2,845.86
4. Step 4: Simplify right side
   8,040.42x = 34,326,194.15
5. Step 5: Solve for x
   x = 34,326,194.15/8,040.42
6. Step 6: Final answer
   x = 4,269.20