Finding the Fourth Proportional to 9,722.42, 13,415.59 and 5,472.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,722.42 : 13,415.59 = 5,472.75 : x
2. Step 2: Convert to fraction form
   9,722.42/13,415.59 = 5,472.75/x
3. Step 3: Cross multiply
   9,722.42x = 13,415.59 × 5,472.75
4. Step 4: Simplify right side
   9,722.42x = 73,420,170.17
5. Step 5: Solve for x
   x = 73,420,170.17/9,722.42
6. Step 6: Final answer
   x = 7,551.64