Finding the Fourth Proportional to 12,689.27, 17,500.33 and 7,652.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,689.27 : 17,500.33 = 7,652.39 : x
2. Step 2: Convert to fraction form
   12,689.27/17,500.33 = 7,652.39/x
3. Step 3: Cross multiply
   12,689.27x = 17,500.33 × 7,652.39
4. Step 4: Simplify right side
   12,689.27x = 133,919,386.18
5. Step 5: Solve for x
   x = 133,919,386.18/12,689.27
6. Step 6: Final answer
   x = 10,553.75