Finding the Fourth Proportional to 9,725.42, 13,419.72 and 5,475.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,725.42 : 13,419.72 = 5,475.76 : x
2. Step 2: Convert to fraction form
   9,725.42/13,419.72 = 5,475.76/x
3. Step 3: Cross multiply
   9,725.42x = 13,419.72 × 5,475.76
4. Step 4: Simplify right side
   9,725.42x = 73,483,165.99
5. Step 5: Solve for x
   x = 73,483,165.99/9,725.42
6. Step 6: Final answer
   x = 7,555.78