Finding the Fourth Proportional to 5,619.30, 8,426.51 and 2,986.17

Step by Step Solution

1. Step 1: Write the proportion equation
   5,619.30 : 8,426.51 = 2,986.17 : x
2. Step 2: Convert to fraction form
   5,619.30/8,426.51 = 2,986.17/x
3. Step 3: Cross multiply
   5,619.30x = 8,426.51 × 2,986.17
4. Step 4: Simplify right side
   5,619.30x = 25,162,991.37
5. Step 5: Solve for x
   x = 25,162,991.37/5,619.30
6. Step 6: Final answer
   x = 4,477.96