Finding the Fourth Proportional to 28,150.96, 42,212.28 and 9,424.48

Step by Step Solution

1. Step 1: Write the proportion equation
   28,150.96 : 42,212.28 = 9,424.48 : x
2. Step 2: Convert to fraction form
   28,150.96/42,212.28 = 9,424.48/x
3. Step 3: Cross multiply
   28,150.96x = 42,212.28 × 9,424.48
4. Step 4: Simplify right side
   28,150.96x = 397,828,788.61
5. Step 5: Solve for x
   x = 397,828,788.61/28,150.96
6. Step 6: Final answer
   x = 14,131.98