Finding the Fourth Proportional to 9,936.84, 13,724.97 and 7,430.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,936.84 : 13,724.97 = 7,430.09 : x
2. Step 2: Convert to fraction form
   9,936.84/13,724.97 = 7,430.09/x
3. Step 3: Cross multiply
   9,936.84x = 13,724.97 × 7,430.09
4. Step 4: Simplify right side
   9,936.84x = 101,977,693.72
5. Step 5: Solve for x
   x = 101,977,693.72/9,936.84
6. Step 6: Final answer
   x = 10,262.59