Finding the Fourth Proportional to 5,106.69, 7,047.45 and 2,868.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,106.69 : 7,047.45 = 2,868.53 : x
2. Step 2: Convert to fraction form
   5,106.69/7,047.45 = 2,868.53/x
3. Step 3: Cross multiply
   5,106.69x = 7,047.45 × 2,868.53
4. Step 4: Simplify right side
   5,106.69x = 20,215,786.51
5. Step 5: Solve for x
   x = 20,215,786.51/5,106.69
6. Step 6: Final answer
   x = 3,958.69