Finding the Fourth Proportional to 5,443.99, 8,164.15 and 2,158.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.99 : 8,164.15 = 2,158.22 : x
2. Step 2: Convert to fraction form
   5,443.99/8,164.15 = 2,158.22/x
3. Step 3: Cross multiply
   5,443.99x = 8,164.15 × 2,158.22
4. Step 4: Simplify right side
   5,443.99x = 17,620,031.81
5. Step 5: Solve for x
   x = 17,620,031.81/5,443.99
6. Step 6: Final answer
   x = 3,236.60