Finding the Fourth Proportional to 11,061.80, 16,571.51 and 8,709.41

Step by Step Solution

1. Step 1: Write the proportion equation
   11,061.80 : 16,571.51 = 8,709.41 : x
2. Step 2: Convert to fraction form
   11,061.80/16,571.51 = 8,709.41/x
3. Step 3: Cross multiply
   11,061.80x = 16,571.51 × 8,709.41
4. Step 4: Simplify right side
   11,061.80x = 144,327,948.50
5. Step 5: Solve for x
   x = 144,327,948.50/11,061.80
6. Step 6: Final answer
   x = 13,047.43