Finding the Fourth Proportional to 9,933.84, 13,707.90 and 5,742.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,933.84 : 13,707.90 = 5,742.36 : x
2. Step 2: Convert to fraction form
   9,933.84/13,707.90 = 5,742.36/x
3. Step 3: Cross multiply
   9,933.84x = 13,707.90 × 5,742.36
4. Step 4: Simplify right side
   9,933.84x = 78,715,696.64
5. Step 5: Solve for x
   x = 78,715,696.64/9,933.84
6. Step 6: Final answer
   x = 7,923.99