Finding the Fourth Proportional to 28,182.32, 42,279.95 and 8,461.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,182.32 : 42,279.95 = 8,461.25 : x
2. Step 2: Convert to fraction form
   28,182.32/42,279.95 = 8,461.25/x
3. Step 3: Cross multiply
   28,182.32x = 42,279.95 × 8,461.25
4. Step 4: Simplify right side
   28,182.32x = 357,741,036.69
5. Step 5: Solve for x
   x = 357,741,036.69/28,182.32
6. Step 6: Final answer
   x = 12,693.81