Finding the Fourth Proportional to 10,173.78, 14,037.96 and 5,697.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,173.78 : 14,037.96 = 5,697.60 : x
2. Step 2: Convert to fraction form
   10,173.78/14,037.96 = 5,697.60/x
3. Step 3: Cross multiply
   10,173.78x = 14,037.96 × 5,697.60
4. Step 4: Simplify right side
   10,173.78x = 79,982,680.90
5. Step 5: Solve for x
   x = 79,982,680.90/10,173.78
6. Step 6: Final answer
   x = 7,861.65