Finding the Fourth Proportional to 8,111.06, 12,167.10 and 3,430.19

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.06 : 12,167.10 = 3,430.19 : x
2. Step 2: Convert to fraction form
   8,111.06/12,167.10 = 3,430.19/x
3. Step 3: Cross multiply
   8,111.06x = 12,167.10 × 3,430.19
4. Step 4: Simplify right side
   8,111.06x = 41,735,464.75
5. Step 5: Solve for x
   x = 41,735,464.75/8,111.06
6. Step 6: Final answer
   x = 5,145.50