Finding the Fourth Proportional to 21,345.09, 32,014.63 and 13,423.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,345.09 : 32,014.63 = 13,423.46 : x
2. Step 2: Convert to fraction form
   21,345.09/32,014.63 = 13,423.46/x
3. Step 3: Cross multiply
   21,345.09x = 32,014.63 × 13,423.46
4. Step 4: Simplify right side
   21,345.09x = 429,747,105.22
5. Step 5: Solve for x
   x = 429,747,105.22/21,345.09
6. Step 6: Final answer
   x = 20,133.30