Finding the Fourth Proportional to 12,701.46, 17,528.64 and 7,665.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,701.46 : 17,528.64 = 7,665.59 : x
2. Step 2: Convert to fraction form
   12,701.46/17,528.64 = 7,665.59/x
3. Step 3: Cross multiply
   12,701.46x = 17,528.64 × 7,665.59
4. Step 4: Simplify right side
   12,701.46x = 134,367,329.17
5. Step 5: Solve for x
   x = 134,367,329.17/12,701.46
6. Step 6: Final answer
   x = 10,578.89