Finding the Fourth Proportional to 9,861.46, 13,608.28 and 5,774.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,861.46 : 13,608.28 = 5,774.51 : x
2. Step 2: Convert to fraction form
   9,861.46/13,608.28 = 5,774.51/x
3. Step 3: Cross multiply
   9,861.46x = 13,608.28 × 5,774.51
4. Step 4: Simplify right side
   9,861.46x = 78,581,052.03
5. Step 5: Solve for x
   x = 78,581,052.03/9,861.46
6. Step 6: Final answer
   x = 7,968.50