Finding the Fourth Proportional to 7,123.68, 10,682.10 and 2,191.98

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.68 : 10,682.10 = 2,191.98 : x
2. Step 2: Convert to fraction form
   7,123.68/10,682.10 = 2,191.98/x
3. Step 3: Cross multiply
   7,123.68x = 10,682.10 × 2,191.98
4. Step 4: Simplify right side
   7,123.68x = 23,414,949.56
5. Step 5: Solve for x
   x = 23,414,949.56/7,123.68
6. Step 6: Final answer
   x = 3,286.92