Finding the Fourth Proportional to 13,308.44, 19,966.77 and 3,948.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.44 : 19,966.77 = 3,948.50 : x
2. Step 2: Convert to fraction form
   13,308.44/19,966.77 = 3,948.50/x
3. Step 3: Cross multiply
   13,308.44x = 19,966.77 × 3,948.50
4. Step 4: Simplify right side
   13,308.44x = 78,838,691.51
5. Step 5: Solve for x
   x = 78,838,691.51/13,308.44
6. Step 6: Final answer
   x = 5,923.96