Finding the Fourth Proportional to 6,857.58, 10,286.34 and 1,663.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,857.58 : 10,286.34 = 1,663.50 : x
2. Step 2: Convert to fraction form
   6,857.58/10,286.34 = 1,663.50/x
3. Step 3: Cross multiply
   6,857.58x = 10,286.34 × 1,663.50
4. Step 4: Simplify right side
   6,857.58x = 17,111,326.59
5. Step 5: Solve for x
   x = 17,111,326.59/6,857.58
6. Step 6: Final answer
   x = 2,495.24