Finding the Fourth Proportional to 5,185.32, 7,771.82 and 2,989.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.32 : 7,771.82 = 2,989.50 : x
2. Step 2: Convert to fraction form
   5,185.32/7,771.82 = 2,989.50/x
3. Step 3: Cross multiply
   5,185.32x = 7,771.82 × 2,989.50
4. Step 4: Simplify right side
   5,185.32x = 23,233,840.94
5. Step 5: Solve for x
   x = 23,233,840.94/5,185.32
6. Step 6: Final answer
   x = 4,480.70