Finding the Fourth Proportional to 9,964.49, 13,750.74 and 5,488.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.49 : 13,750.74 = 5,488.16 : x
2. Step 2: Convert to fraction form
   9,964.49/13,750.74 = 5,488.16/x
3. Step 3: Cross multiply
   9,964.49x = 13,750.74 × 5,488.16
4. Step 4: Simplify right side
   9,964.49x = 75,466,192.48
5. Step 5: Solve for x
   x = 75,466,192.48/9,964.49
6. Step 6: Final answer
   x = 7,573.52