Finding the Fourth Proportional to 28,225.88, 42,338.83 and 7,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,225.88 : 42,338.83 = 7,167.50 : x
2. Step 2: Convert to fraction form
   28,225.88/42,338.83 = 7,167.50/x
3. Step 3: Cross multiply
   28,225.88x = 42,338.83 × 7,167.50
4. Step 4: Simplify right side
   28,225.88x = 303,463,361.29
5. Step 5: Solve for x
   x = 303,463,361.29/28,225.88
6. Step 6: Final answer
   x = 10,751.25