Finding the Fourth Proportional to 5,423.56, 7,484.56 and 3,186.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,423.56 : 7,484.56 = 3,186.15 : x
2. Step 2: Convert to fraction form
   5,423.56/7,484.56 = 3,186.15/x
3. Step 3: Cross multiply
   5,423.56x = 7,484.56 × 3,186.15
4. Step 4: Simplify right side
   5,423.56x = 23,846,893.42
5. Step 5: Solve for x
   x = 23,846,893.42/5,423.56
6. Step 6: Final answer
   x = 4,396.91