Finding the Fourth Proportional to 12,742.78, 17,584.41 and 7,437.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.78 : 17,584.41 = 7,437.82 : x
2. Step 2: Convert to fraction form
   12,742.78/17,584.41 = 7,437.82/x
3. Step 3: Cross multiply
   12,742.78x = 17,584.41 × 7,437.82
4. Step 4: Simplify right side
   12,742.78x = 130,789,676.39
5. Step 5: Solve for x
   x = 130,789,676.39/12,742.78
6. Step 6: Final answer
   x = 10,263.83