Finding the Fourth Proportional to 5,909.39, 8,820.83 and 5,208.79

Step by Step Solution

1. Step 1: Write the proportion equation
   5,909.39 : 8,820.83 = 5,208.79 : x
2. Step 2: Convert to fraction form
   5,909.39/8,820.83 = 5,208.79/x
3. Step 3: Cross multiply
   5,909.39x = 8,820.83 × 5,208.79
4. Step 4: Simplify right side
   5,909.39x = 45,945,842.07
5. Step 5: Solve for x
   x = 45,945,842.07/5,909.39
6. Step 6: Final answer
   x = 7,775.06