Finding the Fourth Proportional to 12,272.17, 18,411.32 and 3,507.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,272.17 : 18,411.32 = 3,507.16 : x
2. Step 2: Convert to fraction form
   12,272.17/18,411.32 = 3,507.16/x
3. Step 3: Cross multiply
   12,272.17x = 18,411.32 × 3,507.16
4. Step 4: Simplify right side
   12,272.17x = 64,571,445.05
5. Step 5: Solve for x
   x = 64,571,445.05/12,272.17
6. Step 6: Final answer
   x = 5,261.62