Finding the Fourth Proportional to 6,978.62, 10,475.22 and 5,131.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.62 : 10,475.22 = 5,131.82 : x
2. Step 2: Convert to fraction form
   6,978.62/10,475.22 = 5,131.82/x
3. Step 3: Cross multiply
   6,978.62x = 10,475.22 × 5,131.82
4. Step 4: Simplify right side
   6,978.62x = 53,756,943.50
5. Step 5: Solve for x
   x = 53,756,943.50/6,978.62
6. Step 6: Final answer
   x = 7,703.09