Finding the Fourth Proportional to 28,271.52, 42,387.12 and 10,726.56

Step by Step Solution

1. Step 1: Write the proportion equation
   28,271.52 : 42,387.12 = 10,726.56 : x
2. Step 2: Convert to fraction form
   28,271.52/42,387.12 = 10,726.56/x
3. Step 3: Cross multiply
   28,271.52x = 42,387.12 × 10,726.56
4. Step 4: Simplify right side
   28,271.52x = 454,667,985.91
5. Step 5: Solve for x
   x = 454,667,985.91/28,271.52
6. Step 6: Final answer
   x = 16,082.19