Finding the Fourth Proportional to 8,404.75, 12,599.29 and 2,854.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,404.75 : 12,599.29 = 2,854.30 : x
2. Step 2: Convert to fraction form
   8,404.75/12,599.29 = 2,854.30/x
3. Step 3: Cross multiply
   8,404.75x = 12,599.29 × 2,854.30
4. Step 4: Simplify right side
   8,404.75x = 35,962,090.45
5. Step 5: Solve for x
   x = 35,962,090.45/8,404.75
6. Step 6: Final answer
   x = 4,278.78