Finding the Fourth Proportional to 5,379.90, 7,423.89 and 3,611.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,379.90 : 7,423.89 = 3,611.22 : x
2. Step 2: Convert to fraction form
   5,379.90/7,423.89 = 3,611.22/x
3. Step 3: Cross multiply
   5,379.90x = 7,423.89 × 3,611.22
4. Step 4: Simplify right side
   5,379.90x = 26,809,300.05
5. Step 5: Solve for x
   x = 26,809,300.05/5,379.90
6. Step 6: Final answer
   x = 4,983.23