Finding the Fourth Proportional to 9,724.50, 13,419.01 and 5,474.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,724.50 : 13,419.01 = 5,474.20 : x
2. Step 2: Convert to fraction form
   9,724.50/13,419.01 = 5,474.20/x
3. Step 3: Cross multiply
   9,724.50x = 13,419.01 × 5,474.20
4. Step 4: Simplify right side
   9,724.50x = 73,458,393.32
5. Step 5: Solve for x
   x = 73,458,393.32/9,724.50
6. Step 6: Final answer
   x = 7,553.95