Finding the Fourth Proportional to 8,709.72, 13,061.16 and 3,162.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,709.72 : 13,061.16 = 3,162.12 : x
2. Step 2: Convert to fraction form
   8,709.72/13,061.16 = 3,162.12/x
3. Step 3: Cross multiply
   8,709.72x = 13,061.16 × 3,162.12
4. Step 4: Simplify right side
   8,709.72x = 41,300,955.26
5. Step 5: Solve for x
   x = 41,300,955.26/8,709.72
6. Step 6: Final answer
   x = 4,741.94