Finding the Fourth Proportional to 3,885.30, 5,349.33 and 3,620.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.30 : 5,349.33 = 3,620.34 : x
2. Step 2: Convert to fraction form
   3,885.30/5,349.33 = 3,620.34/x
3. Step 3: Cross multiply
   3,885.30x = 5,349.33 × 3,620.34
4. Step 4: Simplify right side
   3,885.30x = 19,366,393.37
5. Step 5: Solve for x
   x = 19,366,393.37/3,885.30
6. Step 6: Final answer
   x = 4,984.53