Finding the Fourth Proportional to 11,935.71, 17,902.16 and 3,171.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,935.71 : 17,902.16 = 3,171.30 : x
2. Step 2: Convert to fraction form
   11,935.71/17,902.16 = 3,171.30/x
3. Step 3: Cross multiply
   11,935.71x = 17,902.16 × 3,171.30
4. Step 4: Simplify right side
   11,935.71x = 56,773,104.15
5. Step 5: Solve for x
   x = 56,773,104.15/11,935.71
6. Step 6: Final answer
   x = 4,756.58