Finding the Fourth Proportional to 13,465.54, 20,196.03 and 3,603.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,465.54 : 20,196.03 = 3,603.99 : x
2. Step 2: Convert to fraction form
   13,465.54/20,196.03 = 3,603.99/x
3. Step 3: Cross multiply
   13,465.54x = 20,196.03 × 3,603.99
4. Step 4: Simplify right side
   13,465.54x = 72,786,379.41
5. Step 5: Solve for x
   x = 72,786,379.41/13,465.54
6. Step 6: Final answer
   x = 5,405.38