Finding the Fourth Proportional to 13,016.65, 19,533 and 5,117.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,016.65 : 19,533 = 5,117.77 : x
2. Step 2: Convert to fraction form
   13,016.65/19,533 = 5,117.77/x
3. Step 3: Cross multiply
   13,016.65x = 19,533 × 5,117.77
4. Step 4: Simplify right side
   13,016.65x = 99,965,401.41
5. Step 5: Solve for x
   x = 99,965,401.41/13,016.65
6. Step 6: Final answer
   x = 7,679.81