Finding the Fourth Proportional to 28,520.98, 42,752.31 and 10,983.94

Step by Step Solution

1. Step 1: Write the proportion equation
   28,520.98 : 42,752.31 = 10,983.94 : x
2. Step 2: Convert to fraction form
   28,520.98/42,752.31 = 10,983.94/x
3. Step 3: Cross multiply
   28,520.98x = 42,752.31 × 10,983.94
4. Step 4: Simplify right side
   28,520.98x = 469,588,807.90
5. Step 5: Solve for x
   x = 469,588,807.90/28,520.98
6. Step 6: Final answer
   x = 16,464.68