Finding the Fourth Proportional to 8,160.50, 12,240.72 and 2,317.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,160.50 : 12,240.72 = 2,317.11 : x
2. Step 2: Convert to fraction form
   8,160.50/12,240.72 = 2,317.11/x
3. Step 3: Cross multiply
   8,160.50x = 12,240.72 × 2,317.11
4. Step 4: Simplify right side
   8,160.50x = 28,363,094.72
5. Step 5: Solve for x
   x = 28,363,094.72/8,160.50
6. Step 6: Final answer
   x = 3,475.66