Finding the Fourth Proportional to 9,173.34, 13,757.58 and 3,978

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173.34 : 13,757.58 = 3,978 : x
2. Step 2: Convert to fraction form
   9,173.34/13,757.58 = 3,978/x
3. Step 3: Cross multiply
   9,173.34x = 13,757.58 × 3,978
4. Step 4: Simplify right side
   9,173.34x = 54,727,653.24
5. Step 5: Solve for x
   x = 54,727,653.24/9,173.34
6. Step 6: Final answer
   x = 5,965.95