Finding the Fourth Proportional to 5,119.42, 7,065.15 and 2,881.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,119.42 : 7,065.15 = 2,881.51 : x
2. Step 2: Convert to fraction form
   5,119.42/7,065.15 = 2,881.51/x
3. Step 3: Cross multiply
   5,119.42x = 7,065.15 × 2,881.51
4. Step 4: Simplify right side
   5,119.42x = 20,358,300.38
5. Step 5: Solve for x
   x = 20,358,300.38/5,119.42
6. Step 6: Final answer
   x = 3,976.68