Finding the Fourth Proportional to 28,302.82, 42,459.71 and 10,771.30

Step by Step Solution

1. Step 1: Write the proportion equation
   28,302.82 : 42,459.71 = 10,771.30 : x
2. Step 2: Convert to fraction form
   28,302.82/42,459.71 = 10,771.30/x
3. Step 3: Cross multiply
   28,302.82x = 42,459.71 × 10,771.30
4. Step 4: Simplify right side
   28,302.82x = 457,346,274.32
5. Step 5: Solve for x
   x = 457,346,274.32/28,302.82
6. Step 6: Final answer
   x = 16,159.04