Finding the Fourth Proportional to 8,890.35, 13,340.18 and 5,769.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.35 : 13,340.18 = 5,769.62 : x
2. Step 2: Convert to fraction form
   8,890.35/13,340.18 = 5,769.62/x
3. Step 3: Cross multiply
   8,890.35x = 13,340.18 × 5,769.62
4. Step 4: Simplify right side
   8,890.35x = 76,967,769.33
5. Step 5: Solve for x
   x = 76,967,769.33/8,890.35
6. Step 6: Final answer
   x = 8,657.45