Finding the Fourth Proportional to 8,111.63, 12,168.66 and 2,848.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.63 : 12,168.66 = 2,848.05 : x
2. Step 2: Convert to fraction form
   8,111.63/12,168.66 = 2,848.05/x
3. Step 3: Cross multiply
   8,111.63x = 12,168.66 × 2,848.05
4. Step 4: Simplify right side
   8,111.63x = 34,656,952.11
5. Step 5: Solve for x
   x = 34,656,952.11/8,111.63
6. Step 6: Final answer
   x = 4,272.50