Finding the Fourth Proportional to 9,123.95, 13,683.49 and 4,678.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.95 : 13,683.49 = 4,678.67 : x
2. Step 2: Convert to fraction form
   9,123.95/13,683.49 = 4,678.67/x
3. Step 3: Cross multiply
   9,123.95x = 13,683.49 × 4,678.67
4. Step 4: Simplify right side
   9,123.95x = 64,020,534.16
5. Step 5: Solve for x
   x = 64,020,534.16/9,123.95
6. Step 6: Final answer
   x = 7,016.76