Finding the Fourth Proportional to 7,012.22, 10,518.38 and 2,081.90

Step by Step Solution

1. Step 1: Write the proportion equation
   7,012.22 : 10,518.38 = 2,081.90 : x
2. Step 2: Convert to fraction form
   7,012.22/10,518.38 = 2,081.90/x
3. Step 3: Cross multiply
   7,012.22x = 10,518.38 × 2,081.90
4. Step 4: Simplify right side
   7,012.22x = 21,898,215.32
5. Step 5: Solve for x
   x = 21,898,215.32/7,012.22
6. Step 6: Final answer
   x = 3,122.86