Finding the Fourth Proportional to 12,288.60, 18,436.14 and 3,524.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.60 : 18,436.14 = 3,524.22 : x
2. Step 2: Convert to fraction form
   12,288.60/18,436.14 = 3,524.22/x
3. Step 3: Cross multiply
   12,288.60x = 18,436.14 × 3,524.22
4. Step 4: Simplify right side
   12,288.60x = 64,973,013.31
5. Step 5: Solve for x
   x = 64,973,013.31/12,288.60
6. Step 6: Final answer
   x = 5,287.26