Finding the Fourth Proportional to 28,654.04, 42,993.94 and 15,491

Step by Step Solution

1. Step 1: Write the proportion equation
   28,654.04 : 42,993.94 = 15,491 : x
2. Step 2: Convert to fraction form
   28,654.04/42,993.94 = 15,491/x
3. Step 3: Cross multiply
   28,654.04x = 42,993.94 × 15,491
4. Step 4: Simplify right side
   28,654.04x = 666,019,124.54
5. Step 5: Solve for x
   x = 666,019,124.54/28,654.04
6. Step 6: Final answer
   x = 23,243.46