Finding the Fourth Proportional to 9,964.71, 13,752.38 and 5,488.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.71 : 13,752.38 = 5,488.92 : x
2. Step 2: Convert to fraction form
   9,964.71/13,752.38 = 5,488.92/x
3. Step 3: Cross multiply
   9,964.71x = 13,752.38 × 5,488.92
4. Step 4: Simplify right side
   9,964.71x = 75,485,727.35
5. Step 5: Solve for x
   x = 75,485,727.35/9,964.71
6. Step 6: Final answer
   x = 7,575.31