Finding the Fourth Proportional to 20,215.82, 30,310.02 and 7,061

Step by Step Solution

1. Step 1: Write the proportion equation
   20,215.82 : 30,310.02 = 7,061 : x
2. Step 2: Convert to fraction form
   20,215.82/30,310.02 = 7,061/x
3. Step 3: Cross multiply
   20,215.82x = 30,310.02 × 7,061
4. Step 4: Simplify right side
   20,215.82x = 214,019,051.22
5. Step 5: Solve for x
   x = 214,019,051.22/20,215.82
6. Step 6: Final answer
   x = 10,586.71