Finding the Fourth Proportional to 6,859.94, 10,279.18 and 5,303.79

Step by Step Solution

1. Step 1: Write the proportion equation
   6,859.94 : 10,279.18 = 5,303.79 : x
2. Step 2: Convert to fraction form
   6,859.94/10,279.18 = 5,303.79/x
3. Step 3: Cross multiply
   6,859.94x = 10,279.18 × 5,303.79
4. Step 4: Simplify right side
   6,859.94x = 54,518,598.83
5. Step 5: Solve for x
   x = 54,518,598.83/6,859.94
6. Step 6: Final answer
   x = 7,947.38