Finding the Fourth Proportional to 12,321.69, 18,480.56 and 3,437.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.69 : 18,480.56 = 3,437.25 : x
2. Step 2: Convert to fraction form
   12,321.69/18,480.56 = 3,437.25/x
3. Step 3: Cross multiply
   12,321.69x = 18,480.56 × 3,437.25
4. Step 4: Simplify right side
   12,321.69x = 63,522,287.67
5. Step 5: Solve for x
   x = 63,522,287.67/12,321.69
6. Step 6: Final answer
   x = 5,155.32