Finding the Fourth Proportional to 7,064.89, 10,591.49 and 5,511.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,064.89 : 10,591.49 = 5,511.78 : x
2. Step 2: Convert to fraction form
   7,064.89/10,591.49 = 5,511.78/x
3. Step 3: Cross multiply
   7,064.89x = 10,591.49 × 5,511.78
4. Step 4: Simplify right side
   7,064.89x = 58,377,976.53
5. Step 5: Solve for x
   x = 58,377,976.53/7,064.89
6. Step 6: Final answer
   x = 8,263.11