Finding the Fourth Proportional to 12,640.12, 17,443.56 and 7,335.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.12 : 17,443.56 = 7,335.43 : x
2. Step 2: Convert to fraction form
   12,640.12/17,443.56 = 7,335.43/x
3. Step 3: Cross multiply
   12,640.12x = 17,443.56 × 7,335.43
4. Step 4: Simplify right side
   12,640.12x = 127,956,013.33
5. Step 5: Solve for x
   x = 127,956,013.33/12,640.12
6. Step 6: Final answer
   x = 10,123.01