Finding the Fourth Proportional to 9,059.56, 12,490.62 and 5,867.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,059.56 : 12,490.62 = 5,867.21 : x
2. Step 2: Convert to fraction form
   9,059.56/12,490.62 = 5,867.21/x
3. Step 3: Cross multiply
   9,059.56x = 12,490.62 × 5,867.21
4. Step 4: Simplify right side
   9,059.56x = 73,285,099.79
5. Step 5: Solve for x
   x = 73,285,099.79/9,059.56
6. Step 6: Final answer
   x = 8,089.26