Finding the Fourth Proportional to 11,439.63, 17,154.59 and 3,944.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,439.63 : 17,154.59 = 3,944.01 : x
2. Step 2: Convert to fraction form
   11,439.63/17,154.59 = 3,944.01/x
3. Step 3: Cross multiply
   11,439.63x = 17,154.59 × 3,944.01
4. Step 4: Simplify right side
   11,439.63x = 67,657,854.79
5. Step 5: Solve for x
   x = 67,657,854.79/11,439.63
6. Step 6: Final answer
   x = 5,914.34