Finding the Fourth Proportional to 3,689,678.28, 5,091,882.64 and 2,140,823

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689,678.28 : 5,091,882.64 = 2,140,823 : x
2. Step 2: Convert to fraction form
   3,689,678.28/5,091,882.64 = 2,140,823/x
3. Step 3: Cross multiply
   3,689,678.28x = 5,091,882.64 × 2,140,823
4. Step 4: Simplify right side
   3,689,678.28x = 10,900,819,469,012.72
5. Step 5: Solve for x
   x = 10,900,819,469,012.72/3,689,678.28
6. Step 6: Final answer
   x = 2,954,409.20