Finding the Fourth Proportional to 21,760.37, 32,648.33 and 13,430.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.37 : 32,648.33 = 13,430.69 : x
2. Step 2: Convert to fraction form
   21,760.37/32,648.33 = 13,430.69/x
3. Step 3: Cross multiply
   21,760.37x = 32,648.33 × 13,430.69
4. Step 4: Simplify right side
   21,760.37x = 438,489,599.25
5. Step 5: Solve for x
   x = 438,489,599.25/21,760.37
6. Step 6: Final answer
   x = 20,150.83