Finding the Fourth Proportional to 8,160.21, 12,242.25 and 2,316.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,160.21 : 12,242.25 = 2,316.69 : x
2. Step 2: Convert to fraction form
   8,160.21/12,242.25 = 2,316.69/x
3. Step 3: Cross multiply
   8,160.21x = 12,242.25 × 2,316.69
4. Step 4: Simplify right side
   8,160.21x = 28,361,498.15
5. Step 5: Solve for x
   x = 28,361,498.15/8,160.21
6. Step 6: Final answer
   x = 3,475.58