Finding the Fourth Proportional to 11,019.30, 16,530.03 and 3,620.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.30 : 16,530.03 = 3,620.76 : x
2. Step 2: Convert to fraction form
   11,019.30/16,530.03 = 3,620.76/x
3. Step 3: Cross multiply
   11,019.30x = 16,530.03 × 3,620.76
4. Step 4: Simplify right side
   11,019.30x = 59,851,271.42
5. Step 5: Solve for x
   x = 59,851,271.42/11,019.30
6. Step 6: Final answer
   x = 5,431.49