Finding the Fourth Proportional to 12,899.56, 19,354.81 and 7,049.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,899.56 : 19,354.81 = 7,049.33 : x
2. Step 2: Convert to fraction form
   12,899.56/19,354.81 = 7,049.33/x
3. Step 3: Cross multiply
   12,899.56x = 19,354.81 × 7,049.33
4. Step 4: Simplify right side
   12,899.56x = 136,438,473.54
5. Step 5: Solve for x
   x = 136,438,473.54/12,899.56
6. Step 6: Final answer
   x = 10,576.99