Finding the Fourth Proportional to 28,222.79, 42,339.04 and 8,499.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28,222.79 : 42,339.04 = 8,499.69 : x
2. Step 2: Convert to fraction form
   28,222.79/42,339.04 = 8,499.69/x
3. Step 3: Cross multiply
   28,222.79x = 42,339.04 × 8,499.69
4. Step 4: Simplify right side
   28,222.79x = 359,868,693.65
5. Step 5: Solve for x
   x = 359,868,693.65/28,222.79
6. Step 6: Final answer
   x = 12,751.00