Finding the Fourth Proportional to 5,131,870.38, 7,082,203.41 and 2,840,031.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131,870.38 : 7,082,203.41 = 2,840,031.81 : x
2. Step 2: Convert to fraction form
   5,131,870.38/7,082,203.41 = 2,840,031.81/x
3. Step 3: Cross multiply
   5,131,870.38x = 7,082,203.41 × 2,840,031.81
4. Step 4: Simplify right side
   5,131,870.38x = 20,113,682,969,290.47
5. Step 5: Solve for x
   x = 20,113,682,969,290.47/5,131,870.38
6. Step 6: Final answer
   x = 3,919,366.91