Finding the Fourth Proportional to 12,807.45, 17,675.64 and 7,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.45 : 17,675.64 = 7,506.72 : x
2. Step 2: Convert to fraction form
   12,807.45/17,675.64 = 7,506.72/x
3. Step 3: Cross multiply
   12,807.45x = 17,675.64 × 7,506.72
4. Step 4: Simplify right side
   12,807.45x = 132,686,080.30
5. Step 5: Solve for x
   x = 132,686,080.30/12,807.45
6. Step 6: Final answer
   x = 10,360.07