Finding the Fourth Proportional to 5,185.36, 7,779.89 and 2,222.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.36 : 7,779.89 = 2,222.56 : x
2. Step 2: Convert to fraction form
   5,185.36/7,779.89 = 2,222.56/x
3. Step 3: Cross multiply
   5,185.36x = 7,779.89 × 2,222.56
4. Step 4: Simplify right side
   5,185.36x = 17,291,272.32
5. Step 5: Solve for x
   x = 17,291,272.32/5,185.36
6. Step 6: Final answer
   x = 3,334.63