Finding the Fourth Proportional to 8,739.52, 12,066.72 and 5,383.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.52 : 12,066.72 = 5,383.36 : x
2. Step 2: Convert to fraction form
   8,739.52/12,066.72 = 5,383.36/x
3. Step 3: Cross multiply
   8,739.52x = 12,066.72 × 5,383.36
4. Step 4: Simplify right side
   8,739.52x = 64,959,497.78
5. Step 5: Solve for x
   x = 64,959,497.78/8,739.52
6. Step 6: Final answer
   x = 7,432.85