Finding the Fourth Proportional to 11,728.24, 17,594.16 and 3,938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.24 : 17,594.16 = 3,938.88 : x
2. Step 2: Convert to fraction form
   11,728.24/17,594.16 = 3,938.88/x
3. Step 3: Cross multiply
   11,728.24x = 17,594.16 × 3,938.88
4. Step 4: Simplify right side
   11,728.24x = 69,301,259.34
5. Step 5: Solve for x
   x = 69,301,259.34/11,728.24
6. Step 6: Final answer
   x = 5,908.92