Finding the Fourth Proportional to 12,807.18, 17,675.55 and 7,506.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.18 : 17,675.55 = 7,506.54 : x
2. Step 2: Convert to fraction form
   12,807.18/17,675.55 = 7,506.54/x
3. Step 3: Cross multiply
   12,807.18x = 17,675.55 × 7,506.54
4. Step 4: Simplify right side
   12,807.18x = 132,682,223.10
5. Step 5: Solve for x
   x = 132,682,223.10/12,807.18
6. Step 6: Final answer
   x = 10,359.99