Finding the Fourth Proportional to 28,002.42, 42,006.69 and 8,281.04

Step by Step Solution

1. Step 1: Write the proportion equation
   28,002.42 : 42,006.69 = 8,281.04 : x
2. Step 2: Convert to fraction form
   28,002.42/42,006.69 = 8,281.04/x
3. Step 3: Cross multiply
   28,002.42x = 42,006.69 × 8,281.04
4. Step 4: Simplify right side
   28,002.42x = 347,858,870.12
5. Step 5: Solve for x
   x = 347,858,870.12/28,002.42
6. Step 6: Final answer
   x = 12,422.46