Finding the Fourth Proportional to 13,038.45, 17,996.20 and 7,662.07

Step by Step Solution

1. Step 1: Write the proportion equation
   13,038.45 : 17,996.20 = 7,662.07 : x
2. Step 2: Convert to fraction form
   13,038.45/17,996.20 = 7,662.07/x
3. Step 3: Cross multiply
   13,038.45x = 17,996.20 × 7,662.07
4. Step 4: Simplify right side
   13,038.45x = 137,888,147.47
5. Step 5: Solve for x
   x = 137,888,147.47/13,038.45
6. Step 6: Final answer
   x = 10,575.50