Finding the Fourth Proportional to 7,012.28, 10,519.96 and 2,081.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,012.28 : 10,519.96 = 2,081.62 : x
2. Step 2: Convert to fraction form
   7,012.28/10,519.96 = 2,081.62/x
3. Step 3: Cross multiply
   7,012.28x = 10,519.96 × 2,081.62
4. Step 4: Simplify right side
   7,012.28x = 21,898,527.63
5. Step 5: Solve for x
   x = 21,898,527.63/7,012.28
6. Step 6: Final answer
   x = 3,122.88