Finding the Fourth Proportional to 13,308.84, 19,960.17 and 3,946.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.84 : 19,960.17 = 3,946.59 : x
2. Step 2: Convert to fraction form
   13,308.84/19,960.17 = 3,946.59/x
3. Step 3: Cross multiply
   13,308.84x = 19,960.17 × 3,946.59
4. Step 4: Simplify right side
   13,308.84x = 78,774,614.72
5. Step 5: Solve for x
   x = 78,774,614.72/13,308.84
6. Step 6: Final answer
   x = 5,918.97