Finding the Fourth Proportional to 8,231.01, 12,345.42 and 3,300.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,231.01 : 12,345.42 = 3,300.72 : x
2. Step 2: Convert to fraction form
   8,231.01/12,345.42 = 3,300.72/x
3. Step 3: Cross multiply
   8,231.01x = 12,345.42 × 3,300.72
4. Step 4: Simplify right side
   8,231.01x = 40,748,774.70
5. Step 5: Solve for x
   x = 40,748,774.70/8,231.01
6. Step 6: Final answer
   x = 4,950.64