Finding the Fourth Proportional to 7,091.34, 9,786.06 and 3,947.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,091.34 : 9,786.06 = 3,947.46 : x
2. Step 2: Convert to fraction form
   7,091.34/9,786.06 = 3,947.46/x
3. Step 3: Cross multiply
   7,091.34x = 9,786.06 × 3,947.46
4. Step 4: Simplify right side
   7,091.34x = 38,630,080.41
5. Step 5: Solve for x
   x = 38,630,080.41/7,091.34
6. Step 6: Final answer
   x = 5,447.50