Finding the Fourth Proportional to 9,872.59, 13,624.17 and 5,396.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.59 : 13,624.17 = 5,396.36 : x
2. Step 2: Convert to fraction form
   9,872.59/13,624.17 = 5,396.36/x
3. Step 3: Cross multiply
   9,872.59x = 13,624.17 × 5,396.36
4. Step 4: Simplify right side
   9,872.59x = 73,520,871.95
5. Step 5: Solve for x
   x = 73,520,871.95/9,872.59
6. Step 6: Final answer
   x = 7,446.97