Finding the Fourth Proportional to 9,872.63, 13,623.84 and 5,396.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.63 : 13,623.84 = 5,396.54 : x
2. Step 2: Convert to fraction form
   9,872.63/13,623.84 = 5,396.54/x
3. Step 3: Cross multiply
   9,872.63x = 13,623.84 × 5,396.54
4. Step 4: Simplify right side
   9,872.63x = 73,521,597.51
5. Step 5: Solve for x
   x = 73,521,597.51/9,872.63
6. Step 6: Final answer
   x = 7,447.01