Finding the Fourth Proportional to 13,039.85, 17,994.96 and 7,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,039.85 : 17,994.96 = 7,071.50 : x
2. Step 2: Convert to fraction form
   13,039.85/17,994.96 = 7,071.50/x
3. Step 3: Cross multiply
   13,039.85x = 17,994.96 × 7,071.50
4. Step 4: Simplify right side
   13,039.85x = 127,251,269.67
5. Step 5: Solve for x
   x = 127,251,269.67/13,039.85
6. Step 6: Final answer
   x = 9,758.65