Finding the Fourth Proportional to 9,872.13, 13,623.50 and 5,395.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.13 : 13,623.50 = 5,395.91 : x
2. Step 2: Convert to fraction form
   9,872.13/13,623.50 = 5,395.91/x
3. Step 3: Cross multiply
   9,872.13x = 13,623.50 × 5,395.91
4. Step 4: Simplify right side
   9,872.13x = 73,511,179.89
5. Step 5: Solve for x
   x = 73,511,179.89/9,872.13
6. Step 6: Final answer
   x = 7,446.33