Finding the Fourth Proportional to 9,974.22, 13,764.48 and 5,724.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,974.22 : 13,764.48 = 5,724.14 : x
2. Step 2: Convert to fraction form
   9,974.22/13,764.48 = 5,724.14/x
3. Step 3: Cross multiply
   9,974.22x = 13,764.48 × 5,724.14
4. Step 4: Simplify right side
   9,974.22x = 78,789,810.55
5. Step 5: Solve for x
   x = 78,789,810.55/9,974.22
6. Step 6: Final answer
   x = 7,899.35