Finding the Fourth Proportional to 9,279.18, 12,805.92 and 5,300.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,279.18 : 12,805.92 = 5,300.88 : x
2. Step 2: Convert to fraction form
   9,279.18/12,805.92 = 5,300.88/x
3. Step 3: Cross multiply
   9,279.18x = 12,805.92 × 5,300.88
4. Step 4: Simplify right side
   9,279.18x = 67,882,645.21
5. Step 5: Solve for x
   x = 67,882,645.21/9,279.18
6. Step 6: Final answer
   x = 7,315.59