Finding the Fourth Proportional to 12,543.31, 17,294.80 and 8,067.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,543.31 : 17,294.80 = 8,067.25 : x
2. Step 2: Convert to fraction form
   12,543.31/17,294.80 = 8,067.25/x
3. Step 3: Cross multiply
   12,543.31x = 17,294.80 × 8,067.25
4. Step 4: Simplify right side
   12,543.31x = 139,521,348.49
5. Step 5: Solve for x
   x = 139,521,348.49/12,543.31
6. Step 6: Final answer
   x = 11,123.17