Finding the Fourth Proportional to 6,511.27, 8,978.83 and 5,570.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,511.27 : 8,978.83 = 5,570.18 : x
2. Step 2: Convert to fraction form
   6,511.27/8,978.83 = 5,570.18/x
3. Step 3: Cross multiply
   6,511.27x = 8,978.83 × 5,570.18
4. Step 4: Simplify right side
   6,511.27x = 50,013,699.29
5. Step 5: Solve for x
   x = 50,013,699.29/6,511.27
6. Step 6: Final answer
   x = 7,681.10