Finding the Fourth Proportional to 21,620.26, 32,419.59 and 9,923.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,620.26 : 32,419.59 = 9,923.50 : x
2. Step 2: Convert to fraction form
   21,620.26/32,419.59 = 9,923.50/x
3. Step 3: Cross multiply
   21,620.26x = 32,419.59 × 9,923.50
4. Step 4: Simplify right side
   21,620.26x = 321,715,801.37
5. Step 5: Solve for x
   x = 321,715,801.37/21,620.26
6. Step 6: Final answer
   x = 14,880.29