Finding the Fourth Proportional to 12,620.25, 17,417.46 and 7,315.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.25 : 17,417.46 = 7,315.29 : x
2. Step 2: Convert to fraction form
   12,620.25/17,417.46 = 7,315.29/x
3. Step 3: Cross multiply
   12,620.25x = 17,417.46 × 7,315.29
4. Step 4: Simplify right side
   12,620.25x = 127,413,770.96
5. Step 5: Solve for x
   x = 127,413,770.96/12,620.25
6. Step 6: Final answer
   x = 10,095.98