Finding the Fourth Proportional to 9,970.73, 13,746.82 and 8,171.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970.73 : 13,746.82 = 8,171.58 : x
2. Step 2: Convert to fraction form
   9,970.73/13,746.82 = 8,171.58/x
3. Step 3: Cross multiply
   9,970.73x = 13,746.82 × 8,171.58
4. Step 4: Simplify right side
   9,970.73x = 112,333,198.52
5. Step 5: Solve for x
   x = 112,333,198.52/9,970.73
6. Step 6: Final answer
   x = 11,266.30