Finding the Fourth Proportional to 28,333.48, 42,499.74 and 9,865

Step by Step Solution

1. Step 1: Write the proportion equation
   28,333.48 : 42,499.74 = 9,865 : x
2. Step 2: Convert to fraction form
   28,333.48/42,499.74 = 9,865/x
3. Step 3: Cross multiply
   28,333.48x = 42,499.74 × 9,865
4. Step 4: Simplify right side
   28,333.48x = 419,259,935.10
5. Step 5: Solve for x
   x = 419,259,935.10/28,333.48
6. Step 6: Final answer
   x = 14,797.33