Finding the Fourth Proportional to 9,981.38, 14,953.61 and 5,039.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.38 : 14,953.61 = 5,039.21 : x
2. Step 2: Convert to fraction form
   9,981.38/14,953.61 = 5,039.21/x
3. Step 3: Cross multiply
   9,981.38x = 14,953.61 × 5,039.21
4. Step 4: Simplify right side
   9,981.38x = 75,354,431.03
5. Step 5: Solve for x
   x = 75,354,431.03/9,981.38
6. Step 6: Final answer
   x = 7,549.50