Finding the Fourth Proportional to 13,004.46, 19,488.42 and 7,449.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,004.46 : 19,488.42 = 7,449.48 : x
2. Step 2: Convert to fraction form
   13,004.46/19,488.42 = 7,449.48/x
3. Step 3: Cross multiply
   13,004.46x = 19,488.42 × 7,449.48
4. Step 4: Simplify right side
   13,004.46x = 145,178,595.02
5. Step 5: Solve for x
   x = 145,178,595.02/13,004.46
6. Step 6: Final answer
   x = 11,163.75