Finding the Fourth Proportional to 12,811.83, 17,680.41 and 7,506.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,811.83 : 17,680.41 = 7,506.69 : x
2. Step 2: Convert to fraction form
   12,811.83/17,680.41 = 7,506.69/x
3. Step 3: Cross multiply
   12,811.83x = 17,680.41 × 7,506.69
4. Step 4: Simplify right side
   12,811.83x = 132,721,356.94
5. Step 5: Solve for x
   x = 132,721,356.94/12,811.83
6. Step 6: Final answer
   x = 10,359.28