Finding the Fourth Proportional to 21,401.20, 32,262.19 and 19,973.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,401.20 : 32,262.19 = 19,973.98 : x
2. Step 2: Convert to fraction form
   21,401.20/32,262.19 = 19,973.98/x
3. Step 3: Cross multiply
   21,401.20x = 32,262.19 × 19,973.98
4. Step 4: Simplify right side
   21,401.20x = 644,404,337.82
5. Step 5: Solve for x
   x = 644,404,337.82/21,401.20
6. Step 6: Final answer
   x = 30,110.66