Finding the Fourth Proportional to 28,974.01, 39,980.82 and 16,225.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,974.01 : 39,980.82 = 16,225.42 : x
2. Step 2: Convert to fraction form
   28,974.01/39,980.82 = 16,225.42/x
3. Step 3: Cross multiply
   28,974.01x = 39,980.82 × 16,225.42
4. Step 4: Simplify right side
   28,974.01x = 648,705,557.34
5. Step 5: Solve for x
   x = 648,705,557.34/28,974.01
6. Step 6: Final answer
   x = 22,389.22