Finding the Fourth Proportional to 8,279.34, 12,419.82 and 3,015.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,279.34 : 12,419.82 = 3,015.78 : x
2. Step 2: Convert to fraction form
   8,279.34/12,419.82 = 3,015.78/x
3. Step 3: Cross multiply
   8,279.34x = 12,419.82 × 3,015.78
4. Step 4: Simplify right side
   8,279.34x = 37,455,444.76
5. Step 5: Solve for x
   x = 37,455,444.76/8,279.34
6. Step 6: Final answer
   x = 4,523.97