Finding the Fourth Proportional to 3,641.12, 5,429.79 and 3,607.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,641.12 : 5,429.79 = 3,607.86 : x
2. Step 2: Convert to fraction form
   3,641.12/5,429.79 = 3,607.86/x
3. Step 3: Cross multiply
   3,641.12x = 5,429.79 × 3,607.86
4. Step 4: Simplify right side
   3,641.12x = 19,589,922.15
5. Step 5: Solve for x
   x = 19,589,922.15/3,641.12
6. Step 6: Final answer
   x = 5,380.20