Finding the Fourth Proportional to 13,003.50, 19,456.48 and 7,719.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.50 : 19,456.48 = 7,719.16 : x
2. Step 2: Convert to fraction form
   13,003.50/19,456.48 = 7,719.16/x
3. Step 3: Cross multiply
   13,003.50x = 19,456.48 × 7,719.16
4. Step 4: Simplify right side
   13,003.50x = 150,187,682.16
5. Step 5: Solve for x
   x = 150,187,682.16/13,003.50
6. Step 6: Final answer
   x = 11,549.79