Finding the Fourth Proportional to 8,967.78, 13,452.98 and 3,123

Step by Step Solution

1. Step 1: Write the proportion equation
   8,967.78 : 13,452.98 = 3,123 : x
2. Step 2: Convert to fraction form
   8,967.78/13,452.98 = 3,123/x
3. Step 3: Cross multiply
   8,967.78x = 13,452.98 × 3,123
4. Step 4: Simplify right side
   8,967.78x = 42,013,640.93
5. Step 5: Solve for x
   x = 42,013,640.93/8,967.78
6. Step 6: Final answer
   x = 4,684.95