Finding the Fourth Proportional to 13,039.37, 17,994.23 and 7,071.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.37 : 17,994.23 = 7,071.05 : x
2. Step 2: Convert to fraction form
   13,039.37/17,994.23 = 7,071.05/x
3. Step 3: Cross multiply
   13,039.37x = 17,994.23 × 7,071.05
4. Step 4: Simplify right side
   13,039.37x = 127,237,974.72
5. Step 5: Solve for x
   x = 127,237,974.72/13,039.37
6. Step 6: Final answer
   x = 9,757.99