Finding the Fourth Proportional to 11,174.89, 16,746.74 and 8,398.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,174.89 : 16,746.74 = 8,398.31 : x
2. Step 2: Convert to fraction form
   11,174.89/16,746.74 = 8,398.31/x
3. Step 3: Cross multiply
   11,174.89x = 16,746.74 × 8,398.31
4. Step 4: Simplify right side
   11,174.89x = 140,644,308.21
5. Step 5: Solve for x
   x = 140,644,308.21/11,174.89
6. Step 6: Final answer
   x = 12,585.75