Finding the Fourth Proportional to 13,293.81, 19,944.48 and 3,933.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,293.81 : 19,944.48 = 3,933.78 : x
2. Step 2: Convert to fraction form
   13,293.81/19,944.48 = 3,933.78/x
3. Step 3: Cross multiply
   13,293.81x = 19,944.48 × 3,933.78
4. Step 4: Simplify right side
   13,293.81x = 78,457,196.53
5. Step 5: Solve for x
   x = 78,457,196.53/13,293.81
6. Step 6: Final answer
   x = 5,901.78