Finding the Fourth Proportional to 21,964.88, 32,870.78 and 17,969.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,964.88 : 32,870.78 = 17,969.96 : x
2. Step 2: Convert to fraction form
   21,964.88/32,870.78 = 17,969.96/x
3. Step 3: Cross multiply
   21,964.88x = 32,870.78 × 17,969.96
4. Step 4: Simplify right side
   21,964.88x = 590,686,661.48
5. Step 5: Solve for x
   x = 590,686,661.48/21,964.88
6. Step 6: Final answer
   x = 26,892.32