Finding the Fourth Proportional to 10,321.28, 15,479.52 and 5,050.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.28 : 15,479.52 = 5,050.99 : x
2. Step 2: Convert to fraction form
   10,321.28/15,479.52 = 5,050.99/x
3. Step 3: Cross multiply
   10,321.28x = 15,479.52 × 5,050.99
4. Step 4: Simplify right side
   10,321.28x = 78,186,939.02
5. Step 5: Solve for x
   x = 78,186,939.02/10,321.28
6. Step 6: Final answer
   x = 7,575.32