Finding the Fourth Proportional to 13,113.50, 19,670.52 and 3,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.50 : 19,670.52 = 3,879.50 : x
2. Step 2: Convert to fraction form
   13,113.50/19,670.52 = 3,879.50/x
3. Step 3: Cross multiply
   13,113.50x = 19,670.52 × 3,879.50
4. Step 4: Simplify right side
   13,113.50x = 76,311,782.34
5. Step 5: Solve for x
   x = 76,311,782.34/13,113.50
6. Step 6: Final answer
   x = 5,819.33