Finding the Fourth Proportional to 12,376.76, 17,078.82 and 7,071.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,376.76 : 17,078.82 = 7,071.56 : x
2. Step 2: Convert to fraction form
   12,376.76/17,078.82 = 7,071.56/x
3. Step 3: Cross multiply
   12,376.76x = 17,078.82 × 7,071.56
4. Step 4: Simplify right side
   12,376.76x = 120,773,900.36
5. Step 5: Solve for x
   x = 120,773,900.36/12,376.76
6. Step 6: Final answer
   x = 9,758.12