Finding the Fourth Proportional to 6,899.20, 9,510.32 and 5,404.46

Step by Step Solution

1. Step 1: Write the proportion equation
   6,899.20 : 9,510.32 = 5,404.46 : x
2. Step 2: Convert to fraction form
   6,899.20/9,510.32 = 5,404.46/x
3. Step 3: Cross multiply
   6,899.20x = 9,510.32 × 5,404.46
4. Step 4: Simplify right side
   6,899.20x = 51,398,109.99
5. Step 5: Solve for x
   x = 51,398,109.99/6,899.20
6. Step 6: Final answer
   x = 7,449.87