Finding the Fourth Proportional to 8,041.45, 12,080.71 and 7,709.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,041.45 : 12,080.71 = 7,709.31 : x
2. Step 2: Convert to fraction form
   8,041.45/12,080.71 = 7,709.31/x
3. Step 3: Cross multiply
   8,041.45x = 12,080.71 × 7,709.31
4. Step 4: Simplify right side
   8,041.45x = 93,133,938.41
5. Step 5: Solve for x
   x = 93,133,938.41/8,041.45
6. Step 6: Final answer
   x = 11,581.73