Finding the Fourth Proportional to 28,459.54, 42,691.37 and 10,929.37

Step by Step Solution

1. Step 1: Write the proportion equation
   28,459.54 : 42,691.37 = 10,929.37 : x
2. Step 2: Convert to fraction form
   28,459.54/42,691.37 = 10,929.37/x
3. Step 3: Cross multiply
   28,459.54x = 42,691.37 × 10,929.37
4. Step 4: Simplify right side
   28,459.54x = 466,589,510.43
5. Step 5: Solve for x
   x = 466,589,510.43/28,459.54
6. Step 6: Final answer
   x = 16,394.84