Finding the Fourth Proportional to 12,272.96, 18,405.96 and 3,505.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,272.96 : 18,405.96 = 3,505.52 : x
2. Step 2: Convert to fraction form
   12,272.96/18,405.96 = 3,505.52/x
3. Step 3: Cross multiply
   12,272.96x = 18,405.96 × 3,505.52
4. Step 4: Simplify right side
   12,272.96x = 64,522,460.90
5. Step 5: Solve for x
   x = 64,522,460.90/12,272.96
6. Step 6: Final answer
   x = 5,257.29