Finding the Fourth Proportional to 13,039.52, 17,991.12 and 7,735.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.52 : 17,991.12 = 7,735.52 : x
2. Step 2: Convert to fraction form
   13,039.52/17,991.12 = 7,735.52/x
3. Step 3: Cross multiply
   13,039.52x = 17,991.12 × 7,735.52
4. Step 4: Simplify right side
   13,039.52x = 139,170,668.58
5. Step 5: Solve for x
   x = 139,170,668.58/13,039.52
6. Step 6: Final answer
   x = 10,672.99