Finding the Fourth Proportional to 8,541.88, 12,813.48 and 3,279.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,541.88 : 12,813.48 = 3,279.42 : x
2. Step 2: Convert to fraction form
   8,541.88/12,813.48 = 3,279.42/x
3. Step 3: Cross multiply
   8,541.88x = 12,813.48 × 3,279.42
4. Step 4: Simplify right side
   8,541.88x = 42,020,782.58
5. Step 5: Solve for x
   x = 42,020,782.58/8,541.88
6. Step 6: Final answer
   x = 4,919.38