Finding the Fourth Proportional to 21,593.27, 32,316.69 and 13,278.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,593.27 : 32,316.69 = 13,278.51 : x
2. Step 2: Convert to fraction form
   21,593.27/32,316.69 = 13,278.51/x
3. Step 3: Cross multiply
   21,593.27x = 32,316.69 × 13,278.51
4. Step 4: Simplify right side
   21,593.27x = 429,117,491.33
5. Step 5: Solve for x
   x = 429,117,491.33/21,593.27
6. Step 6: Final answer
   x = 19,872.74