Finding the Fourth Proportional to 9,326.19, 12,870.39 and 5,739.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,326.19 : 12,870.39 = 5,739.82 : x
2. Step 2: Convert to fraction form
   9,326.19/12,870.39 = 5,739.82/x
3. Step 3: Cross multiply
   9,326.19x = 12,870.39 × 5,739.82
4. Step 4: Simplify right side
   9,326.19x = 73,873,628.88
5. Step 5: Solve for x
   x = 73,873,628.88/9,326.19
6. Step 6: Final answer
   x = 7,921.09