Finding the Fourth Proportional to 13,996.89, 19,315.94 and 7,709.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,996.89 : 19,315.94 = 7,709.27 : x
2. Step 2: Convert to fraction form
   13,996.89/19,315.94 = 7,709.27/x
3. Step 3: Cross multiply
   13,996.89x = 19,315.94 × 7,709.27
4. Step 4: Simplify right side
   13,996.89x = 148,911,661.64
5. Step 5: Solve for x
   x = 148,911,661.64/13,996.89
6. Step 6: Final answer
   x = 10,638.91