Finding the Fourth Proportional to 10,839.52, 16,248.72 and 5,574.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.52 : 16,248.72 = 5,574.64 : x
2. Step 2: Convert to fraction form
   10,839.52/16,248.72 = 5,574.64/x
3. Step 3: Cross multiply
   10,839.52x = 16,248.72 × 5,574.64
4. Step 4: Simplify right side
   10,839.52x = 90,580,764.46
5. Step 5: Solve for x
   x = 90,580,764.46/10,839.52
6. Step 6: Final answer
   x = 8,356.53