Finding the Fourth Proportional to 7,222.61, 10,826.62 and 2,838.35

Step by Step Solution

1. Step 1: Write the proportion equation
   7,222.61 : 10,826.62 = 2,838.35 : x
2. Step 2: Convert to fraction form
   7,222.61/10,826.62 = 2,838.35/x
3. Step 3: Cross multiply
   7,222.61x = 10,826.62 × 2,838.35
4. Step 4: Simplify right side
   7,222.61x = 30,729,736.88
5. Step 5: Solve for x
   x = 30,729,736.88/7,222.61
6. Step 6: Final answer
   x = 4,254.66