Finding the Fourth Proportional to 5,120.42, 7,683.89 and 3,368.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,120.42 : 7,683.89 = 3,368.94 : x
2. Step 2: Convert to fraction form
   5,120.42/7,683.89 = 3,368.94/x
3. Step 3: Cross multiply
   5,120.42x = 7,683.89 × 3,368.94
4. Step 4: Simplify right side
   5,120.42x = 25,886,564.38
5. Step 5: Solve for x
   x = 25,886,564.38/5,120.42
6. Step 6: Final answer
   x = 5,055.55