Finding the Fourth Proportional to 5,446.90, 8,164.50 and 2,155.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,446.90 : 8,164.50 = 2,155.42 : x
2. Step 2: Convert to fraction form
   5,446.90/8,164.50 = 2,155.42/x
3. Step 3: Cross multiply
   5,446.90x = 8,164.50 × 2,155.42
4. Step 4: Simplify right side
   5,446.90x = 17,597,926.59
5. Step 5: Solve for x
   x = 17,597,926.59/5,446.90
6. Step 6: Final answer
   x = 3,230.82