Finding the Fourth Proportional to 28,132.96, 42,185.28 and 9,406.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,132.96 : 42,185.28 = 9,406.48 : x
2. Step 2: Convert to fraction form
   28,132.96/42,185.28 = 9,406.48/x
3. Step 3: Cross multiply
   28,132.96x = 42,185.28 × 9,406.48
4. Step 4: Simplify right side
   28,132.96x = 396,814,992.61
5. Step 5: Solve for x
   x = 396,814,992.61/28,132.96
6. Step 6: Final answer
   x = 14,104.99