Finding the Fourth Proportional to 9,939.74, 13,716.15 and 5,463.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939.74 : 13,716.15 = 5,463.38 : x
2. Step 2: Convert to fraction form
   9,939.74/13,716.15 = 5,463.38/x
3. Step 3: Cross multiply
   9,939.74x = 13,716.15 × 5,463.38
4. Step 4: Simplify right side
   9,939.74x = 74,936,539.59
5. Step 5: Solve for x
   x = 74,936,539.59/9,939.74
6. Step 6: Final answer
   x = 7,539.08