Finding the Fourth Proportional to 7,222.17, 10,815.94 and 3,927.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,222.17 : 10,815.94 = 3,927.09 : x
2. Step 2: Convert to fraction form
   7,222.17/10,815.94 = 3,927.09/x
3. Step 3: Cross multiply
   7,222.17x = 10,815.94 × 3,927.09
4. Step 4: Simplify right side
   7,222.17x = 42,475,169.81
5. Step 5: Solve for x
   x = 42,475,169.81/7,222.17
6. Step 6: Final answer
   x = 5,881.22