Finding the Fourth Proportional to 9,723.98, 13,420.25 and 5,475.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,723.98 : 13,420.25 = 5,475.74 : x
2. Step 2: Convert to fraction form
   9,723.98/13,420.25 = 5,475.74/x
3. Step 3: Cross multiply
   9,723.98x = 13,420.25 × 5,475.74
4. Step 4: Simplify right side
   9,723.98x = 73,485,725.79
5. Step 5: Solve for x
   x = 73,485,725.79/9,723.98
6. Step 6: Final answer
   x = 7,557.16