Finding the Fourth Proportional to 8,966.78, 13,450.01 and 3,123.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,966.78 : 13,450.01 = 3,123.23 : x
2. Step 2: Convert to fraction form
   8,966.78/13,450.01 = 3,123.23/x
3. Step 3: Cross multiply
   8,966.78x = 13,450.01 × 3,123.23
4. Step 4: Simplify right side
   8,966.78x = 42,007,492.74
5. Step 5: Solve for x
   x = 42,007,492.74/8,966.78
6. Step 6: Final answer
   x = 4,684.79