Finding the Fourth Proportional to 9,679.57, 14,521.63 and 3,439.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.57 : 14,521.63 = 3,439.33 : x
2. Step 2: Convert to fraction form
   9,679.57/14,521.63 = 3,439.33/x
3. Step 3: Cross multiply
   9,679.57x = 14,521.63 × 3,439.33
4. Step 4: Simplify right side
   9,679.57x = 49,944,632.81
5. Step 5: Solve for x
   x = 49,944,632.81/9,679.57
6. Step 6: Final answer
   x = 5,159.80