Finding the Fourth Proportional to 12,531.31, 17,311.93 and 8,234.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,531.31 : 17,311.93 = 8,234.56 : x
2. Step 2: Convert to fraction form
   12,531.31/17,311.93 = 8,234.56/x
3. Step 3: Cross multiply
   12,531.31x = 17,311.93 × 8,234.56
4. Step 4: Simplify right side
   12,531.31x = 142,556,127.35
5. Step 5: Solve for x
   x = 142,556,127.35/12,531.31
6. Step 6: Final answer
   x = 11,376.00