Finding the Fourth Proportional to 6,770.89, 10,131.72 and 5,589.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,770.89 : 10,131.72 = 5,589.91 : x
2. Step 2: Convert to fraction form
   6,770.89/10,131.72 = 5,589.91/x
3. Step 3: Cross multiply
   6,770.89x = 10,131.72 × 5,589.91
4. Step 4: Simplify right side
   6,770.89x = 56,635,394.65
5. Step 5: Solve for x
   x = 56,635,394.65/6,770.89
6. Step 6: Final answer
   x = 8,364.54