Finding the Fourth Proportional to 7,091.10, 9,785.30 and 4,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,091.10 : 9,785.30 = 4,106.72 : x
2. Step 2: Convert to fraction form
   7,091.10/9,785.30 = 4,106.72/x
3. Step 3: Cross multiply
   7,091.10x = 9,785.30 × 4,106.72
4. Step 4: Simplify right side
   7,091.10x = 40,185,487.22
5. Step 5: Solve for x
   x = 40,185,487.22/7,091.10
6. Step 6: Final answer
   x = 5,667.03