Finding the Fourth Proportional to 8,817.42, 12,168.42 and 5,279.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,817.42 : 12,168.42 = 5,279.96 : x
2. Step 2: Convert to fraction form
   8,817.42/12,168.42 = 5,279.96/x
3. Step 3: Cross multiply
   8,817.42x = 12,168.42 × 5,279.96
4. Step 4: Simplify right side
   8,817.42x = 64,248,710.02
5. Step 5: Solve for x
   x = 64,248,710.02/8,817.42
6. Step 6: Final answer
   x = 7,286.57