Finding the Fourth Proportional to 8,078.70, 12,123.54 and 2,884.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,078.70 : 12,123.54 = 2,884.57 : x
2. Step 2: Convert to fraction form
   8,078.70/12,123.54 = 2,884.57/x
3. Step 3: Cross multiply
   8,078.70x = 12,123.54 × 2,884.57
4. Step 4: Simplify right side
   8,078.70x = 34,971,199.78
5. Step 5: Solve for x
   x = 34,971,199.78/8,078.70
6. Step 6: Final answer
   x = 4,328.82