Finding the Fourth Proportional to 11,399.39, 17,100.80 and 4,002.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,399.39 : 17,100.80 = 4,002.55 : x
2. Step 2: Convert to fraction form
   11,399.39/17,100.80 = 4,002.55/x
3. Step 3: Cross multiply
   11,399.39x = 17,100.80 × 4,002.55
4. Step 4: Simplify right side
   11,399.39x = 68,446,759.28
5. Step 5: Solve for x
   x = 68,446,759.28/11,399.39
6. Step 6: Final answer
   x = 6,004.42