Finding the Fourth Proportional to 5,570.58, 7,689.69 and 4,089.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,570.58 : 7,689.69 = 4,089.09 : x
2. Step 2: Convert to fraction form
   5,570.58/7,689.69 = 4,089.09/x
3. Step 3: Cross multiply
   5,570.58x = 7,689.69 × 4,089.09
4. Step 4: Simplify right side
   5,570.58x = 31,443,834.48
5. Step 5: Solve for x
   x = 31,443,834.48/5,570.58
6. Step 6: Final answer
   x = 5,644.62