Finding the Fourth Proportional to 9,872.01, 13,623.06 and 5,395.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.01 : 13,623.06 = 5,395.80 : x
2. Step 2: Convert to fraction form
   9,872.01/13,623.06 = 5,395.80/x
3. Step 3: Cross multiply
   9,872.01x = 13,623.06 × 5,395.80
4. Step 4: Simplify right side
   9,872.01x = 73,507,307.15
5. Step 5: Solve for x
   x = 73,507,307.15/9,872.01
6. Step 6: Final answer
   x = 7,446.03