Finding the Fourth Proportional to 5,535.57, 7,672.06 and 5,431.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,535.57 : 7,672.06 = 5,431.89 : x
2. Step 2: Convert to fraction form
   5,535.57/7,672.06 = 5,431.89/x
3. Step 3: Cross multiply
   5,535.57x = 7,672.06 × 5,431.89
4. Step 4: Simplify right side
   5,535.57x = 41,673,772.41
5. Step 5: Solve for x
   x = 41,673,772.41/5,535.57
6. Step 6: Final answer
   x = 7,528.36