Finding the Fourth Proportional to 9,105.21, 13,644.45 and 5,201.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.21 : 13,644.45 = 5,201.01 : x
2. Step 2: Convert to fraction form
   9,105.21/13,644.45 = 5,201.01/x
3. Step 3: Cross multiply
   9,105.21x = 13,644.45 × 5,201.01
4. Step 4: Simplify right side
   9,105.21x = 70,964,920.89
5. Step 5: Solve for x
   x = 70,964,920.89/9,105.21
6. Step 6: Final answer
   x = 7,793.88