Finding the Fourth Proportional to 28,298.04, 42,451.52 and 8,574.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,298.04 : 42,451.52 = 8,574.12 : x
2. Step 2: Convert to fraction form
   28,298.04/42,451.52 = 8,574.12/x
3. Step 3: Cross multiply
   28,298.04x = 42,451.52 × 8,574.12
4. Step 4: Simplify right side
   28,298.04x = 363,984,426.66
5. Step 5: Solve for x
   x = 363,984,426.66/28,298.04
6. Step 6: Final answer
   x = 12,862.53