Finding the Fourth Proportional to 12,620.32, 17,414.85 and 7,315.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.32 : 17,414.85 = 7,315.45 : x
2. Step 2: Convert to fraction form
   12,620.32/17,414.85 = 7,315.45/x
3. Step 3: Cross multiply
   12,620.32x = 17,414.85 × 7,315.45
4. Step 4: Simplify right side
   12,620.32x = 127,397,464.43
5. Step 5: Solve for x
   x = 127,397,464.43/12,620.32
6. Step 6: Final answer
   x = 10,094.63