Finding the Fourth Proportional to 6,810.90, 9,404.29 and 5,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,810.90 : 9,404.29 = 5,490.50 : x
2. Step 2: Convert to fraction form
   6,810.90/9,404.29 = 5,490.50/x
3. Step 3: Cross multiply
   6,810.90x = 9,404.29 × 5,490.50
4. Step 4: Simplify right side
   6,810.90x = 51,634,183.20
5. Step 5: Solve for x
   x = 51,634,183.20/6,810.90
6. Step 6: Final answer
   x = 7,581.11