Finding the Fourth Proportional to 8,020.32, 12,031.51 and 3,091.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,020.32 : 12,031.51 = 3,091.37 : x
2. Step 2: Convert to fraction form
   8,020.32/12,031.51 = 3,091.37/x
3. Step 3: Cross multiply
   8,020.32x = 12,031.51 × 3,091.37
4. Step 4: Simplify right side
   8,020.32x = 37,193,795.67
5. Step 5: Solve for x
   x = 37,193,795.67/8,020.32
6. Step 6: Final answer
   x = 4,637.45