Finding the Fourth Proportional to 12,895.15, 19,344.72 and 5,499.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,895.15 : 19,344.72 = 5,499.64 : x
2. Step 2: Convert to fraction form
   12,895.15/19,344.72 = 5,499.64/x
3. Step 3: Cross multiply
   12,895.15x = 19,344.72 × 5,499.64
4. Step 4: Simplify right side
   12,895.15x = 106,388,995.90
5. Step 5: Solve for x
   x = 106,388,995.90/12,895.15
6. Step 6: Final answer
   x = 8,250.31