Finding the Fourth Proportional to 12,412.32, 18,622.26 and 3,647.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,412.32 : 18,622.26 = 3,647.31 : x
2. Step 2: Convert to fraction form
   12,412.32/18,622.26 = 3,647.31/x
3. Step 3: Cross multiply
   12,412.32x = 18,622.26 × 3,647.31
4. Step 4: Simplify right side
   12,412.32x = 67,921,155.12
5. Step 5: Solve for x
   x = 67,921,155.12/12,412.32
6. Step 6: Final answer
   x = 5,472.08