Finding the Fourth Proportional to 10,989.86, 16,486.81 and 3,594.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989.86 : 16,486.81 = 3,594.72 : x
2. Step 2: Convert to fraction form
   10,989.86/16,486.81 = 3,594.72/x
3. Step 3: Cross multiply
   10,989.86x = 16,486.81 × 3,594.72
4. Step 4: Simplify right side
   10,989.86x = 59,265,518.48
5. Step 5: Solve for x
   x = 59,265,518.48/10,989.86
6. Step 6: Final answer
   x = 5,392.75