Finding the Fourth Proportional to 10,326.05, 15,478.25 and 5,053.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,326.05 : 15,478.25 = 5,053.79 : x
2. Step 2: Convert to fraction form
   10,326.05/15,478.25 = 5,053.79/x
3. Step 3: Cross multiply
   10,326.05x = 15,478.25 × 5,053.79
4. Step 4: Simplify right side
   10,326.05x = 78,223,799.80
5. Step 5: Solve for x
   x = 78,223,799.80/10,326.05
6. Step 6: Final answer
   x = 7,575.38