Finding the Fourth Proportional to 8,525.72, 12,784.22 and 3,904.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,525.72 : 12,784.22 = 3,904.76 : x
2. Step 2: Convert to fraction form
   8,525.72/12,784.22 = 3,904.76/x
3. Step 3: Cross multiply
   8,525.72x = 12,784.22 × 3,904.76
4. Step 4: Simplify right side
   8,525.72x = 49,919,310.89
5. Step 5: Solve for x
   x = 49,919,310.89/8,525.72
6. Step 6: Final answer
   x = 5,855.14