Finding the Fourth Proportional to 28,114.64, 42,139.52 and 10,573.28

Step by Step Solution

1. Step 1: Write the proportion equation
   28,114.64 : 42,139.52 = 10,573.28 : x
2. Step 2: Convert to fraction form
   28,114.64/42,139.52 = 10,573.28/x
3. Step 3: Cross multiply
   28,114.64x = 42,139.52 × 10,573.28
4. Step 4: Simplify right side
   28,114.64x = 445,552,944.03
5. Step 5: Solve for x
   x = 445,552,944.03/28,114.64
6. Step 6: Final answer
   x = 15,847.72