Finding the Fourth Proportional to 7,111.20, 10,667.63 and 2,950.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.20 : 10,667.63 = 2,950.68 : x
2. Step 2: Convert to fraction form
   7,111.20/10,667.63 = 2,950.68/x
3. Step 3: Cross multiply
   7,111.20x = 10,667.63 × 2,950.68
4. Step 4: Simplify right side
   7,111.20x = 31,476,762.49
5. Step 5: Solve for x
   x = 31,476,762.49/7,111.20
6. Step 6: Final answer
   x = 4,426.36