Finding the Fourth Proportional to 9,872.96, 13,624.71 and 5,396.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.96 : 13,624.71 = 5,396.76 : x
2. Step 2: Convert to fraction form
   9,872.96/13,624.71 = 5,396.76/x
3. Step 3: Cross multiply
   9,872.96x = 13,624.71 × 5,396.76
4. Step 4: Simplify right side
   9,872.96x = 73,529,262.96
5. Step 5: Solve for x
   x = 73,529,262.96/9,872.96
6. Step 6: Final answer
   x = 7,447.54