Finding the Fourth Proportional to 28,739.59, 43,096.82 and 14,499.31

Step by Step Solution

1. Step 1: Write the proportion equation
   28,739.59 : 43,096.82 = 14,499.31 : x
2. Step 2: Convert to fraction form
   28,739.59/43,096.82 = 14,499.31/x
3. Step 3: Cross multiply
   28,739.59x = 43,096.82 × 14,499.31
4. Step 4: Simplify right side
   28,739.59x = 624,874,186.33
5. Step 5: Solve for x
   x = 624,874,186.33/28,739.59
6. Step 6: Final answer
   x = 21,742.62