Finding the Fourth Proportional to 12,708.99, 19,061.15 and 5,311.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.99 : 19,061.15 = 5,311.46 : x
2. Step 2: Convert to fraction form
   12,708.99/19,061.15 = 5,311.46/x
3. Step 3: Cross multiply
   12,708.99x = 19,061.15 × 5,311.46
4. Step 4: Simplify right side
   12,708.99x = 101,242,556.87
5. Step 5: Solve for x
   x = 101,242,556.87/12,708.99
6. Step 6: Final answer
   x = 7,966.22