Finding the Fourth Proportional to 9,724.88, 13,420.30 and 5,475.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,724.88 : 13,420.30 = 5,475.94 : x
2. Step 2: Convert to fraction form
   9,724.88/13,420.30 = 5,475.94/x
3. Step 3: Cross multiply
   9,724.88x = 13,420.30 × 5,475.94
4. Step 4: Simplify right side
   9,724.88x = 73,488,757.58
5. Step 5: Solve for x
   x = 73,488,757.58/9,724.88
6. Step 6: Final answer
   x = 7,556.78