Finding the Fourth Proportional to 5,423.37, 7,484.31 and 3,185.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,423.37 : 7,484.31 = 3,185.28 : x
2. Step 2: Convert to fraction form
   5,423.37/7,484.31 = 3,185.28/x
3. Step 3: Cross multiply
   5,423.37x = 7,484.31 × 3,185.28
4. Step 4: Simplify right side
   5,423.37x = 23,839,641.77
5. Step 5: Solve for x
   x = 23,839,641.77/5,423.37
6. Step 6: Final answer
   x = 4,395.72