Finding the Fourth Proportional to 8,047.72, 12,063.34 and 3,115.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,047.72 : 12,063.34 = 3,115.45 : x
2. Step 2: Convert to fraction form
   8,047.72/12,063.34 = 3,115.45/x
3. Step 3: Cross multiply
   8,047.72x = 12,063.34 × 3,115.45
4. Step 4: Simplify right side
   8,047.72x = 37,582,732.60
5. Step 5: Solve for x
   x = 37,582,732.60/8,047.72
6. Step 6: Final answer
   x = 4,669.99