Finding the Fourth Proportional to 8,913.04, 12,300.42 and 5,769.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,913.04 : 12,300.42 = 5,769.28 : x
2. Step 2: Convert to fraction form
   8,913.04/12,300.42 = 5,769.28/x
3. Step 3: Cross multiply
   8,913.04x = 12,300.42 × 5,769.28
4. Step 4: Simplify right side
   8,913.04x = 70,964,567.10
5. Step 5: Solve for x
   x = 70,964,567.10/8,913.04
6. Step 6: Final answer
   x = 7,961.88