Finding the Fourth Proportional to 7,164.05, 9,885.85 and 4,019.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,164.05 : 9,885.85 = 4,019.63 : x
2. Step 2: Convert to fraction form
   7,164.05/9,885.85 = 4,019.63/x
3. Step 3: Cross multiply
   7,164.05x = 9,885.85 × 4,019.63
4. Step 4: Simplify right side
   7,164.05x = 39,737,399.76
5. Step 5: Solve for x
   x = 39,737,399.76/7,164.05
6. Step 6: Final answer
   x = 5,546.78