Finding the Fourth Proportional to 6,580.89, 9,077.39 and 3,926.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,580.89 : 9,077.39 = 3,926.25 : x
2. Step 2: Convert to fraction form
   6,580.89/9,077.39 = 3,926.25/x
3. Step 3: Cross multiply
   6,580.89x = 9,077.39 × 3,926.25
4. Step 4: Simplify right side
   6,580.89x = 35,640,082.86
5. Step 5: Solve for x
   x = 35,640,082.86/6,580.89
6. Step 6: Final answer
   x = 5,415.69