Finding the Fourth Proportional to 8,510.86, 12,758.50 and 3,580.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,510.86 : 12,758.50 = 3,580.85 : x
2. Step 2: Convert to fraction form
   8,510.86/12,758.50 = 3,580.85/x
3. Step 3: Cross multiply
   8,510.86x = 12,758.50 × 3,580.85
4. Step 4: Simplify right side
   8,510.86x = 45,686,274.73
5. Step 5: Solve for x
   x = 45,686,274.73/8,510.86
6. Step 6: Final answer
   x = 5,368.00