Finding the Fourth Proportional to 20,936.34, 31,384.83 and 7,075.62

Step by Step Solution

1. Step 1: Write the proportion equation
   20,936.34 : 31,384.83 = 7,075.62 : x
2. Step 2: Convert to fraction form
   20,936.34/31,384.83 = 7,075.62/x
3. Step 3: Cross multiply
   20,936.34x = 31,384.83 × 7,075.62
4. Step 4: Simplify right side
   20,936.34x = 222,067,130.84
5. Step 5: Solve for x
   x = 222,067,130.84/20,936.34
6. Step 6: Final answer
   x = 10,606.78