Finding the Fourth Proportional to 28,654.79, 42,973.88 and 12,014.37

Step by Step Solution

1. Step 1: Write the proportion equation
   28,654.79 : 42,973.88 = 12,014.37 : x
2. Step 2: Convert to fraction form
   28,654.79/42,973.88 = 12,014.37/x
3. Step 3: Cross multiply
   28,654.79x = 42,973.88 × 12,014.37
4. Step 4: Simplify right side
   28,654.79x = 516,304,034.58
5. Step 5: Solve for x
   x = 516,304,034.58/28,654.79
6. Step 6: Final answer
   x = 18,018.07