Finding the Fourth Proportional to 11,345.34, 17,006.31 and 8,217.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,345.34 : 17,006.31 = 8,217.48 : x
2. Step 2: Convert to fraction form
   11,345.34/17,006.31 = 8,217.48/x
3. Step 3: Cross multiply
   11,345.34x = 17,006.31 × 8,217.48
4. Step 4: Simplify right side
   11,345.34x = 139,749,012.30
5. Step 5: Solve for x
   x = 139,749,012.30/11,345.34
6. Step 6: Final answer
   x = 12,317.75