Finding the Fourth Proportional to 11,007.80, 16,499.28 and 5,465.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,007.80 : 16,499.28 = 5,465.10 : x
2. Step 2: Convert to fraction form
   11,007.80/16,499.28 = 5,465.10/x
3. Step 3: Cross multiply
   11,007.80x = 16,499.28 × 5,465.10
4. Step 4: Simplify right side
   11,007.80x = 90,170,215.13
5. Step 5: Solve for x
   x = 90,170,215.13/11,007.80
6. Step 6: Final answer
   x = 8,191.48