Finding the Fourth Proportional to 15,799.15, 21,801.50 and 9,747.69

Step by Step Solution

1. Step 1: Write the proportion equation
   15,799.15 : 21,801.50 = 9,747.69 : x
2. Step 2: Convert to fraction form
   15,799.15/21,801.50 = 9,747.69/x
3. Step 3: Cross multiply
   15,799.15x = 21,801.50 × 9,747.69
4. Step 4: Simplify right side
   15,799.15x = 212,514,105.79
5. Step 5: Solve for x
   x = 212,514,105.79/15,799.15
6. Step 6: Final answer
   x = 13,450.98