Finding the Fourth Proportional to 6,780.62, 9,350.69 and 5,288.00

Step by Step Solution

1. Step 1: Write the proportion equation
   6,780.62 : 9,350.69 = 5,288.00 : x
2. Step 2: Convert to fraction form
   6,780.62/9,350.69 = 5,288.00/x
3. Step 3: Cross multiply
   6,780.62x = 9,350.69 × 5,288.00
4. Step 4: Simplify right side
   6,780.62x = 49,446,375.53
5. Step 5: Solve for x
   x = 49,446,375.53/6,780.62
6. Step 6: Final answer
   x = 7,292.31