Finding the Fourth Proportional to 9,964.48, 13,750.98 and 5,488.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964.48 : 13,750.98 = 5,488.22 : x
2. Step 2: Convert to fraction form
   9,964.48/13,750.98 = 5,488.22/x
3. Step 3: Cross multiply
   9,964.48x = 13,750.98 × 5,488.22
4. Step 4: Simplify right side
   9,964.48x = 75,468,403.46
5. Step 5: Solve for x
   x = 75,468,403.46/9,964.48
6. Step 6: Final answer
   x = 7,573.74