Finding the Fourth Proportional to 12,708.98, 19,066.01 and 4,389.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.98 : 19,066.01 = 4,389.30 : x
2. Step 2: Convert to fraction form
   12,708.98/19,066.01 = 4,389.30/x
3. Step 3: Cross multiply
   12,708.98x = 19,066.01 × 4,389.30
4. Step 4: Simplify right side
   12,708.98x = 83,686,437.69
5. Step 5: Solve for x
   x = 83,686,437.69/12,708.98
6. Step 6: Final answer
   x = 6,584.83