Finding the Fourth Proportional to 9,965.98, 13,753.16 and 5,489.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,965.98 : 13,753.16 = 5,489.76 : x
2. Step 2: Convert to fraction form
   9,965.98/13,753.16 = 5,489.76/x
3. Step 3: Cross multiply
   9,965.98x = 13,753.16 × 5,489.76
4. Step 4: Simplify right side
   9,965.98x = 75,501,592.35
5. Step 5: Solve for x
   x = 75,501,592.35/9,965.98
6. Step 6: Final answer
   x = 7,575.93