Finding the Fourth Proportional to 12,719.71, 19,074.88 and 4,397.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.71 : 19,074.88 = 4,397.59 : x
2. Step 2: Convert to fraction form
   12,719.71/19,074.88 = 4,397.59/x
3. Step 3: Cross multiply
   12,719.71x = 19,074.88 × 4,397.59
4. Step 4: Simplify right side
   12,719.71x = 83,883,501.54
5. Step 5: Solve for x
   x = 83,883,501.54/12,719.71
6. Step 6: Final answer
   x = 6,594.77