Finding the Fourth Proportional to 9,989.30, 13,784.37 and 5,738.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,989.30 : 13,784.37 = 5,738.97 : x
2. Step 2: Convert to fraction form
   9,989.30/13,784.37 = 5,738.97/x
3. Step 3: Cross multiply
   9,989.30x = 13,784.37 × 5,738.97
4. Step 4: Simplify right side
   9,989.30x = 79,108,085.90
5. Step 5: Solve for x
   x = 79,108,085.90/9,989.30
6. Step 6: Final answer
   x = 7,919.29