Finding the Fourth Proportional to 28,059.12, 42,082.64 and 10,530.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28,059.12 : 42,082.64 = 10,530.24 : x
2. Step 2: Convert to fraction form
   28,059.12/42,082.64 = 10,530.24/x
3. Step 3: Cross multiply
   28,059.12x = 42,082.64 × 10,530.24
4. Step 4: Simplify right side
   28,059.12x = 443,140,299.03
5. Step 5: Solve for x
   x = 443,140,299.03/28,059.12
6. Step 6: Final answer
   x = 15,793.09