Finding the Fourth Proportional to 8,111.13, 12,168.51 and 2,917

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.13 : 12,168.51 = 2,917 : x
2. Step 2: Convert to fraction form
   8,111.13/12,168.51 = 2,917/x
3. Step 3: Cross multiply
   8,111.13x = 12,168.51 × 2,917
4. Step 4: Simplify right side
   8,111.13x = 35,495,543.67
5. Step 5: Solve for x
   x = 35,495,543.67/8,111.13
6. Step 6: Final answer
   x = 4,376.15