Finding the Fourth Proportional to 5,481.42, 7,564.32 and 3,123.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,481.42 : 7,564.32 = 3,123.57 : x
2. Step 2: Convert to fraction form
   5,481.42/7,564.32 = 3,123.57/x
3. Step 3: Cross multiply
   5,481.42x = 7,564.32 × 3,123.57
4. Step 4: Simplify right side
   5,481.42x = 23,627,683.02
5. Step 5: Solve for x
   x = 23,627,683.02/5,481.42
6. Step 6: Final answer
   x = 4,310.50