Finding the Fourth Proportional to 8,481.34, 12,710.15 and 7,225.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,481.34 : 12,710.15 = 7,225.39 : x
2. Step 2: Convert to fraction form
   8,481.34/12,710.15 = 7,225.39/x
3. Step 3: Cross multiply
   8,481.34x = 12,710.15 × 7,225.39
4. Step 4: Simplify right side
   8,481.34x = 91,835,777.00
5. Step 5: Solve for x
   x = 91,835,777.00/8,481.34
6. Step 6: Final answer
   x = 10,827.98