Finding the Fourth Proportional to 10,623, 15,919.90 and 5,417.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,623 : 15,919.90 = 5,417.94 : x
2. Step 2: Convert to fraction form
   10,623/15,919.90 = 5,417.94/x
3. Step 3: Cross multiply
   10,623x = 15,919.90 × 5,417.94
4. Step 4: Simplify right side
   10,623x = 86,253,063.01
5. Step 5: Solve for x
   x = 86,253,063.01/10,623
6. Step 6: Final answer
   x = 8,119.46