Finding the Fourth Proportional to 11,019.12, 16,525.17 and 3,621.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.12 : 16,525.17 = 3,621.86 : x
2. Step 2: Convert to fraction form
   11,019.12/16,525.17 = 3,621.86/x
3. Step 3: Cross multiply
   11,019.12x = 16,525.17 × 3,621.86
4. Step 4: Simplify right side
   11,019.12x = 59,851,769.59
5. Step 5: Solve for x
   x = 59,851,769.59/11,019.12
6. Step 6: Final answer
   x = 5,431.63