Finding the Fourth Proportional to 5,619.40, 8,422.23 and 3,976.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,619.40 : 8,422.23 = 3,976.42 : x
2. Step 2: Convert to fraction form
   5,619.40/8,422.23 = 3,976.42/x
3. Step 3: Cross multiply
   5,619.40x = 8,422.23 × 3,976.42
4. Step 4: Simplify right side
   5,619.40x = 33,490,323.82
5. Step 5: Solve for x
   x = 33,490,323.82/5,619.40
6. Step 6: Final answer
   x = 5,959.77