Finding the Fourth Proportional to 12,320.01, 18,480.15 and 3,555

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.01 : 18,480.15 = 3,555 : x
2. Step 2: Convert to fraction form
   12,320.01/18,480.15 = 3,555/x
3. Step 3: Cross multiply
   12,320.01x = 18,480.15 × 3,555
4. Step 4: Simplify right side
   12,320.01x = 65,696,933.25
5. Step 5: Solve for x
   x = 65,696,933.25/12,320.01
6. Step 6: Final answer
   x = 5,332.54