Finding the Fourth Proportional to 8,510.58, 12,763.44 and 3,580.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,510.58 : 12,763.44 = 3,580.20 : x
2. Step 2: Convert to fraction form
   8,510.58/12,763.44 = 3,580.20/x
3. Step 3: Cross multiply
   8,510.58x = 12,763.44 × 3,580.20
4. Step 4: Simplify right side
   8,510.58x = 45,695,667.89
5. Step 5: Solve for x
   x = 45,695,667.89/8,510.58
6. Step 6: Final answer
   x = 5,369.28