Finding the Fourth Proportional to 7,900.80, 10,869.57 and 7,682.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,900.80 : 10,869.57 = 7,682.10 : x
2. Step 2: Convert to fraction form
   7,900.80/10,869.57 = 7,682.10/x
3. Step 3: Cross multiply
   7,900.80x = 10,869.57 × 7,682.10
4. Step 4: Simplify right side
   7,900.80x = 83,501,123.70
5. Step 5: Solve for x
   x = 83,501,123.70/7,900.80
6. Step 6: Final answer
   x = 10,568.69