Finding the Fourth Proportional to 21,483.69, 29,637.30 and 13,932.46

Step by Step Solution

1. Step 1: Write the proportion equation
   21,483.69 : 29,637.30 = 13,932.46 : x
2. Step 2: Convert to fraction form
   21,483.69/29,637.30 = 13,932.46/x
3. Step 3: Cross multiply
   21,483.69x = 29,637.30 × 13,932.46
4. Step 4: Simplify right side
   21,483.69x = 412,920,496.76
5. Step 5: Solve for x
   x = 412,920,496.76/21,483.69
6. Step 6: Final answer
   x = 19,220.19