Finding the Fourth Proportional to 9,992.49, 13,790.05 and 5,744.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,992.49 : 13,790.05 = 5,744.89 : x
2. Step 2: Convert to fraction form
   9,992.49/13,790.05 = 5,744.89/x
3. Step 3: Cross multiply
   9,992.49x = 13,790.05 × 5,744.89
4. Step 4: Simplify right side
   9,992.49x = 79,222,320.34
5. Step 5: Solve for x
   x = 79,222,320.34/9,992.49
6. Step 6: Final answer
   x = 7,928.19