Finding the Fourth Proportional to 12,815.98, 17,682.71 and 7,507.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,815.98 : 17,682.71 = 7,507.94 : x
2. Step 2: Convert to fraction form
   12,815.98/17,682.71 = 7,507.94/x
3. Step 3: Cross multiply
   12,815.98x = 17,682.71 × 7,507.94
4. Step 4: Simplify right side
   12,815.98x = 132,760,688.18
5. Step 5: Solve for x
   x = 132,760,688.18/12,815.98
6. Step 6: Final answer
   x = 10,359.00