Finding the Fourth Proportional to 11,142.55, 16,703.42 and 5,589.39

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142.55 : 16,703.42 = 5,589.39 : x
2. Step 2: Convert to fraction form
   11,142.55/16,703.42 = 5,589.39/x
3. Step 3: Cross multiply
   11,142.55x = 16,703.42 × 5,589.39
4. Step 4: Simplify right side
   11,142.55x = 93,361,928.71
5. Step 5: Solve for x
   x = 93,361,928.71/11,142.55
6. Step 6: Final answer
   x = 8,378.87