Finding the Fourth Proportional to 28,231.57, 42,350.60 and 9,505.18

Step by Step Solution

1. Step 1: Write the proportion equation
   28,231.57 : 42,350.60 = 9,505.18 : x
2. Step 2: Convert to fraction form
   28,231.57/42,350.60 = 9,505.18/x
3. Step 3: Cross multiply
   28,231.57x = 42,350.60 × 9,505.18
4. Step 4: Simplify right side
   28,231.57x = 402,550,099.34
5. Step 5: Solve for x
   x = 402,550,099.34/28,231.57
6. Step 6: Final answer
   x = 14,258.86