Finding the Fourth Proportional to 12,321.86, 18,482.51 and 3,557.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.86 : 18,482.51 = 3,557.52 : x
2. Step 2: Convert to fraction form
   12,321.86/18,482.51 = 3,557.52/x
3. Step 3: Cross multiply
   12,321.86x = 18,482.51 × 3,557.52
4. Step 4: Simplify right side
   12,321.86x = 65,751,907.87
5. Step 5: Solve for x
   x = 65,751,907.87/12,321.86
6. Step 6: Final answer
   x = 5,336.20