Finding the Fourth Proportional to 21,620.31, 32,418.69 and 9,760.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,620.31 : 32,418.69 = 9,760.19 : x
2. Step 2: Convert to fraction form
   21,620.31/32,418.69 = 9,760.19/x
3. Step 3: Cross multiply
   21,620.31x = 32,418.69 × 9,760.19
4. Step 4: Simplify right side
   21,620.31x = 316,412,411.86
5. Step 5: Solve for x
   x = 316,412,411.86/21,620.31
6. Step 6: Final answer
   x = 14,634.96