Finding the Fourth Proportional to 11,019.30, 16,508.12 and 8,541.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.30 : 16,508.12 = 8,541.99 : x
2. Step 2: Convert to fraction form
   11,019.30/16,508.12 = 8,541.99/x
3. Step 3: Cross multiply
   11,019.30x = 16,508.12 × 8,541.99
4. Step 4: Simplify right side
   11,019.30x = 141,012,153.25
5. Step 5: Solve for x
   x = 141,012,153.25/11,019.30
6. Step 6: Final answer
   x = 12,796.83