Finding the Fourth Proportional to 7,222.78, 10,830.52 and 2,291.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,222.78 : 10,830.52 = 2,291.10 : x
2. Step 2: Convert to fraction form
   7,222.78/10,830.52 = 2,291.10/x
3. Step 3: Cross multiply
   7,222.78x = 10,830.52 × 2,291.10
4. Step 4: Simplify right side
   7,222.78x = 24,813,804.37
5. Step 5: Solve for x
   x = 24,813,804.37/7,222.78
6. Step 6: Final answer
   x = 3,435.49