Finding the Fourth Proportional to 21,760.56, 32,645.64 and 7,909.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.56 : 32,645.64 = 7,909.56 : x
2. Step 2: Convert to fraction form
   21,760.56/32,645.64 = 7,909.56/x
3. Step 3: Cross multiply
   21,760.56x = 32,645.64 × 7,909.56
4. Step 4: Simplify right side
   21,760.56x = 258,212,648.32
5. Step 5: Solve for x
   x = 258,212,648.32/21,760.56
6. Step 6: Final answer
   x = 11,866.08