Finding the Fourth Proportional to 8,112.84, 12,166.83 and 2,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,112.84 : 12,166.83 = 2,917.50 : x
2. Step 2: Convert to fraction form
   8,112.84/12,166.83 = 2,917.50/x
3. Step 3: Cross multiply
   8,112.84x = 12,166.83 × 2,917.50
4. Step 4: Simplify right side
   8,112.84x = 35,496,726.53
5. Step 5: Solve for x
   x = 35,496,726.53/8,112.84
6. Step 6: Final answer
   x = 4,375.38