Finding the Fourth Proportional to 8,707.59, 13,061.34 and 3,160.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,707.59 : 13,061.34 = 3,160.92 : x
2. Step 2: Convert to fraction form
   8,707.59/13,061.34 = 3,160.92/x
3. Step 3: Cross multiply
   8,707.59x = 13,061.34 × 3,160.92
4. Step 4: Simplify right side
   8,707.59x = 41,285,850.83
5. Step 5: Solve for x
   x = 41,285,850.83/8,707.59
6. Step 6: Final answer
   x = 4,741.36