Finding the Fourth Proportional to 8,719.89, 13,085.34 and 3,173.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,719.89 : 13,085.34 = 3,173.62 : x
2. Step 2: Convert to fraction form
   8,719.89/13,085.34 = 3,173.62/x
3. Step 3: Cross multiply
   8,719.89x = 13,085.34 × 3,173.62
4. Step 4: Simplify right side
   8,719.89x = 41,527,896.73
5. Step 5: Solve for x
   x = 41,527,896.73/8,719.89
6. Step 6: Final answer
   x = 4,762.43