Finding the Fourth Proportional to 6,978.67, 10,451.59 and 5,507.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.67 : 10,451.59 = 5,507.98 : x
2. Step 2: Convert to fraction form
   6,978.67/10,451.59 = 5,507.98/x
3. Step 3: Cross multiply
   6,978.67x = 10,451.59 × 5,507.98
4. Step 4: Simplify right side
   6,978.67x = 57,567,148.69
5. Step 5: Solve for x
   x = 57,567,148.69/6,978.67
6. Step 6: Final answer
   x = 8,249.01