Finding the Fourth Proportional to 8,275.34, 12,416.37 and 5,317.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,275.34 : 12,416.37 = 5,317.10 : x
2. Step 2: Convert to fraction form
   8,275.34/12,416.37 = 5,317.10/x
3. Step 3: Cross multiply
   8,275.34x = 12,416.37 × 5,317.10
4. Step 4: Simplify right side
   8,275.34x = 66,019,080.93
5. Step 5: Solve for x
   x = 66,019,080.93/8,275.34
6. Step 6: Final answer
   x = 7,977.81