Finding the Fourth Proportional to 28,089, 38,762.82 and 15,514.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,089 : 38,762.82 = 15,514.56 : x
2. Step 2: Convert to fraction form
   28,089/38,762.82 = 15,514.56/x
3. Step 3: Cross multiply
   28,089x = 38,762.82 × 15,514.56
4. Step 4: Simplify right side
   28,089x = 601,388,096.66
5. Step 5: Solve for x
   x = 601,388,096.66/28,089
6. Step 6: Final answer
   x = 21,410.09