Finding the Fourth Proportional to 8,059.91, 12,034.69 and 7,221.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,059.91 : 12,034.69 = 7,221.56 : x
2. Step 2: Convert to fraction form
   8,059.91/12,034.69 = 7,221.56/x
3. Step 3: Cross multiply
   8,059.91x = 12,034.69 × 7,221.56
4. Step 4: Simplify right side
   8,059.91x = 86,909,198.31
5. Step 5: Solve for x
   x = 86,909,198.31/8,059.91
6. Step 6: Final answer
   x = 10,782.91